I fail to see how this is any different from how Roman Catholics treat their images of Jesus, the saints, and the Virgin Mary. They light candles in front of these statues and talk to them while they pray, but none of them are daft enough to think the statues are actually Jesus, Mary, or the saints themselves. At the same time, most Christians (including non-Catholics) would consider it blasphemous to step on a crucifix or tear up a Bible, both of which are powerful iconic images. And when people think about the Christian god, they visualize him as a white-bearded patriarch sitting on a throne in the clouds. Part of the entire point to Jesus, in fact, is that he’s supposed to be Yahweh himself in human form—and it doesn’t get any more anthropomorphic than that! In other words, Christianity anthropomorphizes its god and is every bit as “idolatrous” as Paganism is; but for some reason, it’s only “bad” or “evil” when non-Christians do these things.

This image wasn’t invented by Seth McFarlane; it goes all the way back to the Canaanite god, El.
Despite what anyone else might say, anthropomorphism is not a “bad” thing at all. It is also not entirely removed from reality. For example, we now know that willow, poplar, and sugar maple trees will actually warn each other about impending insect attacks; that bees possess cognition and an extremely complicated language; and that beavers are basically hydraulic engineers, creating dams to make ponds and build houses for the families. Trees, bees, and beavers might not think, feel, or communicate the same way human beings do, but they DO in fact think, feel, and communicate. And when ancient peoples anthropomorphized these and other aspects of nature, it was their way of living in balance with the rest of the universe. Even atheists can’t help projecting human thoughts and emotions onto their beloved pets, and it’s really a good thing that human beings do this. Anthropomorphism encourages us to empathize with nature, rather than treating it like some soulless, alien thing that only exists for us to exploit. The earth would not be burning out of control like it is right now if more people anthropomorphized nature today.
Polytheists are also stigmatized for offering gifts, especially of food and drink, to images of our gods. People assume we think the images will actually move and eat the food, or that we think our gods will “starve” if we don’t “feed” them. In all my years of identifying as a polytheist, I have never met a single person who ever believed either of these claims—not even once. If you have trouble understanding why anyone would want to offer food to a god, all you really need to grasp is the historical importance of sharing meals. Food is just as important today as it was in ancient times, and having enough of it is often a struggle for many people. Hence why sharing your food with someone else is considered a HUGE sign of compassion and respect in virtually every culture across the globe. Even today, inviting people to breakfast, lunch, and/or dinner is still a prominent form of social bonding. And that right there is the true purpose of offering food to deities: to bond with them socially. By invoking gods into images and offering them food, polytheists are inviting these cosmic forces over to dinner and treating them as distinguished houseguests. This is not just some wacky superstition, but a deeply affectionate form of religious worship that is every bit as authentic, legitimate, and passionate as anything that Christians, Muslims, or Jews practice.
Different polytheists make offerings in different ways. The Egyptians ingested their offerings, believing their gods would consume the spiritual energy of the food while the worshipers consumed its physical substance. I have always liked this way of doing it best, because it feels more like one is sharing with the deity than simply giving them things. When we treat people to dinner, we don’t just pay for them to eat and not eat anything ourselves; we eat with them. And if the gods truly consume anything during this process, it is the love and good will we express to them through such demonstrations of faith. But food and drink are not the only things we can offer; we can also offer actions, like helping a deity’s sacred animals, or writing literature and/or creating art for the god(s). We can participate in our communities in ways that honor them, like donating to a library for Thoth, picking up trash in a park for Geb, or visiting a dairy farm and feeding the baby milk cows for Hathor. There are all kinds of things we can offer to the gods and share with them and others that will make our souls and spirits glow with love and good vibes.
Another stigma against polytheists is the belief that we commit human sacrifices. It is true that certain civilizations engaged in this practice, but the Egyptians do not seem to have done so for any theological purpose. In those cases where a Pharaoh’s servants were ceremonially killed and buried with the deceased king, it was to appease the king, not the gods. As a polytheist, I think killing anyone except in self-defense is a barbaric offense against the gods, and most other polytheists will tell you the same. If a person kills someone in the name of a polytheist god, they are in the exact same category as monotheists who bomb abortion clinics or fly airplanes into skyscrapers because “God told me to.”
As for animal sacrifice, most polytheists do not engage in this practice today, but those who do usually live in rural areas and are accustomed to killing their own food. They are not cat-slashing sociopaths, but regular hunters or farmers; all that’s different is that they dedicate the animals to their gods and thank the animals for their lives before killing them and eating them. It’s not that different in principle from butchers preparing kosher or halal meat products. Suffice it to say that polytheists who live in urban or suburban areas have no reason to kill any animals, since we are just as accustomed to buying our food from local supermarkets as everyone else. Many of us are also vegetarians, vegans, and/or animal rights activists, so the idea that we run around bathing ourselves in goat’s blood is total bullshit.