There are lots of different flavors of anarchy, and anarchists can't agree on them. Or--and I think this might be quoting or paraphrasing someone: there are as many different kinds of anarchy as there are anarchists. And sometimes their reactions to each other are very strongly negative, like "That's not really anarchy, that's just preserving capitalism via a last-ditch attempt!"
Also I think in the US at least, religion plays into it. God over humanity is conceptually the ultimate hierarchy model that Christians buy into. So it seems like Christians often don't have as much issue with embracing the idea of one person being over another person as a reflection of that model. This seems a little bit funny given how anarchic Jesus was, but he never said, "Yo, check it out, I am literally an anarchist and you should be too," and so they seem to have missed that.
Also I think in the US at least, religion plays into it. God over humanity is conceptually the ultimate hierarchy model that Christians buy into. So it seems like Christians often don't have as much issue with embracing the idea of one person being over another person as a reflection of that model. This seems a little bit funny given how anarchic Jesus was, but he never said, "Yo, check it out, I am literally an anarchist and you should be too," and so they seem to have missed that.