https://www.salon.com/2015/06/10/10_famous_comedians_on_how_political_correctness_is_killing_comedy_we_are_addicted_to_the_rush_of_being_offended/
But I don't think The Office, made for a mainstream network audience, is in danger of being censored because of pc attitudes. I think I can still find it on Netflix, right? Whether Richard Pryor or others would be allowed to perform today, and where, is a different question. I mean, NBC wouldn't have let Richard Pryor (a comedy god) do an uncensored set on network TV in the 1980s. There have always been television standards that have prevented certain types of comedy from airing on TV. We just didn't call it pc culture back then. So, apples to apples, comedians are operating under similar restrictions on TV, except they can say a few more curse words and have more latitude with sex jokes. On cable TV, there's just a ton of standup available, so I don't see any problem with access or censorship.
Just because people write things about being offended on the internet doesn't mean comedians aren't allowed to perform. The anger about pc culture seems to be more anger about being criticized in the first place. I read the linked article, and no one mentioned being prevented from performing, just the sting of not having their work be received well. It's ok they don't like that, but I don't see why I should be overly concerned about the process playing out like it should. People do their work, some people like it and some people don't. If you think the people who don't like it are a bunch of touchy vegans, then you don't pay attention to them. But comedians don't have a special license to be immune from critique, even if you think the people doing the criticizing are annoying. Just do what liberals have done for decades when bible scolds complained about sex scenes between unmarried adults: ignore it.