Honestly I don’t see anything particularly polarizing about her, but admittedly I don’t listen to anything she has to say because I’m not interested in moronic opinions.
It seems to me that she just has some exceptionally bad takes from a leftist viewpoint.
Contrast that to Omar with comments like “some people did something” referencing 9/11 which I view as actually divisive/polarizing. AOC really doesn’t deserve the attention she gets. She wouldn’t get a lot of attention if she were ugly, but she’s a bimbo and naturally that means all eyes on her.