The thing is, though, this didn't happen because of hypersensitivity and political correctness. The person who dug up his tweets from ten years ago to stir up all of this is pretty open about his disdain for both of those things, to put it mildly. This way he gets to hurt someone he dislikes while also demonizing groups he dislikes as well.
It was a hit job, plain and simple, politics aside.
I don't think his tweets were defensible, but I also think that he had already dealt with concerns about his tweets and his earlier sense of humor back when he was hired. I thought a lot of things were funny ten or fifteen years ago that I would find utterly horrific now.
And like I said, Disney knew this was in his past when they hired him, because Shocking Edgelordery was literally in his resume.