This is not AT ALL the argument I've made. It's not about white characters vs black characters. And it's not about male characters vs female characters. Again, I understand US racial and gender history and its correlation to the medium of entertainment. The original comment was essentially, let's make X female character a movie because she's female. I'm refuting that sentiment when it comes to race and gender. It should be instead, let's make this character a solo movie because they're a great character.
And yes, I'm against having Miles Morales as Spideman in the MCU in his his first appearance because, quite frankly, I don't want to see him. When I envisioned The Avengers I always dreamt about the possibility of having the Spiderman in it that I grew up with, the Parker Spideman. From a story and fan service standpoint, the moment when Spiderman, the Parker Spiderman, appears will be th culmination of what we've been asking for for over a decade.
A non Parket spidey would not fit in that moment. Sure he can come about after but this initial cherry popping need to be done by Peter Motherfucking Parker.
Moreover, and I'll go back to this again, it's more about the character than the gender or race and sorry I don't care how "Bob" would like to define the world and everyone in it, the comment "we have enough white male super heroes already" doesn't come from a place a agree with because of its implications. I am not saying there aren't a lot of "white male" characters but I am saying that to use race and gender as the foundation for your opinion is immature, short sighted, dangerous and irresponsible.