Originally Posted by
Blind Wedjat
I'm not sure what you're trying to say here, and I mean that honestly.
Red Skull is a Nazi. He's a bigot, and he's a Red Scare (I'll advise you google that) kind of villain the same way The Mandarin is Yellow Peril. I don't understand how your other examples are even comparable to that. Deadpool is an intentional parody, and while there are stereotypes of Canadians, he doesn't embody any widely racist or offensive ones used as political propaganda, which is what characters like Red Skull and the Mandarin have been used as. Likewise Iceman being in the closet doesn't make him a negative stereotype of gay people. That's a very relatable issue in the LGBTQ+ community.
Characters being designed with certain traits doesn't mean those traits can't be offensive or purposely done to spread propaganda or be racist.