Counterproductive?

That depends on your aim, I suppose.

I try not to flip the bozo bit on people. I try to separate behavior from person. I've had very pleasant conversations with people who've exhibited awful behavior sometimes, and I've had unpleasant experiences with people who are normally very pleasant. It happens. We're human.

With that said, there are a few people in the world I want nothing more to do with for the foreseeable future—but what point is there in naming and shaming them in public? Our disagreements are private (and, admittedly, may be one sided).

I take it this way. Certainly I'd rather be called on the carpet for doing something wrong than for being someone wrong. Tell me I've behaved or spoken or written poorly and I won't like it, but I'll accept it far better than if you tell me I'm a horrible person. I don't think I'm alone in that.

(Besides, if you want to see a more civil Perl community, I think you have to be more civil yourself. Replacing a sinister cabal with a sinister anti-cabal does no one else any good.)