Shock humor for the sake of it will be less common but honestly outside of the Internet it already was. But dark humor has always been around and always will. It needs to be done right to be effective, and that certain group of people you see in these threads will never find it funny, but it'll be there.
As an aside, I see a lot of people missing what about shock humor is actually supposed to be about. The people making jokes about, say, child rape don't think child rape is funny. The fact that it's absolutely despicable and unfunny is part of the joke. If it wasn't actually unquestionably terrible it wouldn't shock people, nor would the surprise (which all humor relies on) be as strong.
As an aside, I see a lot of people missing what about shock humor is actually supposed to be about. The people making jokes about, say, child rape don't think child rape is funny. The fact that it's absolutely despicable and unfunny is part of the joke. If it wasn't actually unquestionably terrible it wouldn't shock people, nor would the surprise (which all humor relies on) be as strong.
You didn't see the guy who had a panic attack because Trump was president