Let me guess it was one of the top posters
Yes.
who thought your recent criticism of the direction of the community got too much karma.
Yes; his criticism was trivially wrong, as could be seen just by looking at posts systematically.
Or maybe someone who didn't like your responses here.
Actually, I laid out exactly what was wrong with the post: it was a good idea which hadn't been developed anywhere to the extent that it would be worth reading or referring back to, and I gave pointers to the literature he could use to develop it.
The reason I told Konk that his contributions were slightly net negative - when he specifically asked for my opinion on the matter - was exactly what Vladimir_Nesov guessed: he was flinging around and contributing all sorts of things, and just generally increasing the noise to signal ratio. I suggested he simply develop his ideas better and post less; Konk was the one who decided that he should leave/take a long break, saying that he had a lot of academic work coming up as well.
Apologies for the harsh language gwern. I shouldn't have used it. I will edit and retract to correct that.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.