Why is Natalie so disliked?

I haven’t really been up to date with this whole situation, but I’ve seen a lot of hate towards Evans girlfriend online which I initially boiled down to jealousy but the more I read the more confused/intrigued I get. There’s been things said about possible arguments with fans, but no one seems to have screenshots or proof, so if someone could explain the lore to me I’d be grateful. PS I don’t currently have an opinion on any of this as I am not informed enough