Fuck Megyn Kelly.
Having said that, I'm indifferent about things like Tropic Thunder and Its Always Sunny in Philadelphia. Even if the intentions behind the usage of blackface in those properties aren't malicious, I think the overwhelming majority of audiences are merely laughing at the act - and the deeper meanings are completely lost.
Speaking anecdotally of course, but for my general not the most up to date on social matters friends "back home", RDJ's character in Tropic Thunder is blatantly and obviously making fun of the whole idea and people understand that.
For Sunny, nobody I know even focuses on that aspect. It's more just how absurd the whole situation is, especially the shower scene. But again, those characters are enjoyed
because they're notoriously shitty, ignorant, racist idiots. I haven't seen anyone point to Mac and say "Yeah see he does it, it's obviously fine".