The problem with that is that the over-focus isn't harmless, it's already having negative effects, e.g., Lewin's videos being taken down.

Sure. For any given problem, some degree of focus, whether it is an overfocus or not is going to have some negative side-effects. That's essentially just the non-onesided nature of policy issues. So the question becomes where do you balance it? And moreover, how do you decide that it really has gone over too far in one direction or aother?

Also this is not the kind of thing that's smart to ignore for them same reason that someone living in Salem Village in 1692 probably should not ignore the increasingly popular silly belief that a lot of their problems are caused by witches.

Can you expand on this logic?