I think it’s just attrition by explaining the GIL problem over and over again. Nick is one of the major core developers and probably just fed up by the topic. So this bit of snark is all the pay he’ll ever get for his work on CPython.
I really liked the article. But look at how much of this thread is spent talking about that bit of snark. I think that mixing the snark in with all of the rational reasons for Python 3's existence and not working on the GIL made some people less receptive to rational arguments. In other words, I don't think it was worth it.
