Earlier quoted context omitted.
SpaceX is the most ambitious company on Earth, working toward the goal of making humans a multi-planetary species. Their orders are to get to Mars. Employees that are bikeshedding, sowing internal discord, engaging in mutiny, are not working toward the goal and in fact actively hindering it. That's all the reason needed to prune them from the otherwise focused and ambitious team.
But Elon's hyperbolic tweets and offensive behavior don't actively hinder getting to Mars? I mean, he's the guy running the company, you'd think what he says and does would have a lot more influence over the success or failure of the company's goals.
Personally I don't. I also don't take offense at anything Chris Rock or Ricky Gervais says. Others do take offense to what they say. That's their choice, their opinion, and not one that can or should be enforced on others.