I think a lot of people just didn’t understand the context. It maybe says something about the people I interact with regularly, but I haven’t heard a sexist / racist / uncomfortable joke in person for years. Once I stopped hanging out with teenagers, it pretty much took care of itself.

Understanding the context, and knowing that lots of people have to spend time with assholes, i think it’s good advice. But it isn’t that surprising that, without any context, lots of people don’t assume she’s talking about a specific type of problematic joke, sincs there’s not really anything in the text to suggest that. In which case it’s pretty sociopathic advice.