Reflexive political correctness on HN and other forums, meanwhile, is not preemptive. It is in response to the overwhelming amount of belligerence, innuendo, and offhand sexism that runs rampant when there is no such moderation. If you think it implausible that sexism is more noticeable and notable online than in schools or workplaces, I have to wonder how much time you've spent on BBS, IRC, etc., over the years. Or else whether you just don't notice it. This wouldn't be unusual; sexism is so embedded in most parts of the world that it takes either a great amount of reflection or a small amount of finding yourself on the wrong end of it to notice. (We are, after all, communicating in a language in which "gratify me, a man, sexually" is among the stronger insults.)
(Note that I've never seen sama or anyone else attack someone for "why would I use your lib over sqlite?")
I would not expect anyone to feel as strongly about libraries as they do about how other people are treated; in fact, I'd be glad not to know them if they did.