I think there a good chance that a professional philosopher like Laurence Jonathan Cohen knows what Wittgensteinian logic happens to be.

Do you think that L J Cohen is wrong about what logic happens to be?

Do you think that Stefan Schubert is wrong when he says that L J Cohen made his argument based on Wittgensteinian logic and that L J Cohen in fact did make his argument in another way?

Less confidently, LW's analytic linguistic approach would not be possible without the forerunning work of Wittgenstein, and mocking him is basically exactly the wrongly way round.

Marx did have a large influence on the intellectual framework of economics. That doesn't mean that it's a bad idea to mock him. Just because someone did some valid work doesn't mean that all of his ideas are correct.

Secondly, given the LW position on a subject like the Many World Hypothesis do you really think it's reflective of what Wittgenstein thought?