It's not about people inherently disliking female heroes or minorities, it's when it's forced and inorganic to the story, or a ham-fisted political appeal.
Uncanny Avengers is the best team book Marvel has out right now and it's got probably the most "diverse" lineup as far as race AND background is concerned.
Rogue is female and the leader of the team, Synapse is female, Hispanic, AND an inhuman and she's easily the most likable of the nu-humans, Dr. Voodoo is black and has explicitly ethnic magic.
And you know what? It makes sense. The Unity squad is an explicitly political group that intentionally includes members from various cape factions, and it's members are aware of that fact and some even dislike it at first. The "diversity" isn't glossed over like it's how everything SHOULD be, the Mutants and Inhumans chafe at one another amidst the ongoing conflict.
Dr. Voodoo isnt some random fucker who came along and replaced an existing white guy, he's his own man that''s existed since the 70's. His powers are cool and he's a valuable asset to the team as resident spellcaster, the fact he's an experienced magic user is his defining role, not "token black guy".
Synapse is hispanic, but you aren't beaten over the head with cliche latina empowerment nonsense like in America''s book. The fact her uncle got Inhuman powers and went evil and she had to side against him is the important part of her family, not that they've got a Mexican last name.
Other book spend so much time tripping over their dicks trying to come across as "diverse" that they forget to be about capes doing their fucking job.
Captain America gives the Unity Squad the job of taking out red skull and neutralizing xavier''s brain, they clean up a bunch of unresolved plot bullshit along the way like Banner and Pym, they get the skull, save the day, incinerate the brain l.
Along the way these individual characters work together and bond.