I think the reason OP listed "sexism, slutshaming" separately is because they're separate issues. The downvotes are coming from your erroneous conflation of the two (and possibly being perceived as purposeful conflation to strawman the argument).

That said, I think the slutshaming you pointed out is just as damaging as what's going on in Wu's case. Who gives a shit if @sexyengineer is wearing a speedo in all of his tutorials? The point is the information and if he's not sharing bad info I don't see the problem other than the fact that you and I have differences in taste.

I.e., don't yuck in other people's yum :)