No one would give a shit Robert.
Yeah, clickbait bellyaching and twitter slap fight would ensue, but that is just the "new normal" as people say. Rest of us? whatever, as far as I am concerned every single character in the capeshit movies or comics can be a POC trans genderfluid pansexual person. Just go for it, bang that drum.
As far as casting goes, this one sucks, because Will Smith can't do right if he doesn't play "charisma man", with the exception maybe of "the pursuit of happiness" and Reed Richards is anything but "charsima man".
He is my favorite of the fantastic 4, and his whole deal is that as much of a genius he is, his tragedy is that he is stuck on his own head and has a really hard time reaching out to his family, even his wife, and so he behaves in a selfish way, carring guilty for "creating" Dr. Doom and what happened to Ben and arrogance for thinking he can solve any problem by himself and his big brain, and that is constantly coming back to bite him on his elastic ass.
Reed has a really hard time expressing himself, and you wanna cast him with an actor that only works when he is mugging the camera?