I was typing up a longer response to this but I got tired, so here's my $.02:
The opinion that people should joke about whatever they want is a privileged one. Jokes are never made in a vacuum, and it's the responsibility of the person making a joke to consider who its target it is and what effects it may have. While Pewdiepie probably isn’t a Nazi, joking about the Holocaust normalizes antisemitism and trivializes the unfathomable trauma people are still living through. Period.
No one is saying that he can’t make those kinds of jokes, but instead that it’s irresponsible, and content creators who are using a massive platform in a way that may cause harm to marginalized communities should not be financially supported or given a free pass.
Essentially - with power comes responsibility. I'm choosing to side with the victims of antisemitism in this case, not the person who's trivialized it.
So....we should treat him differently because he has a big platform?
It's his channel and he should be allowed to post whatever he wants on it. If you're going to call him out on the shit he posts (in bad taste or not) you should be consistent with your outrage.
At the end of the day, Youtube allows us to view videos we want and not view those we don't want to view. If you don't like his content, don't view it. It's that simple.