Thanks. Can I ask how you saw the original question? I only get a page saying this question has been removed, but then again I'm not logged into SO on my phone.

I think this confirms my suspicions: Someone didn't read the SO rules, posted a trivial question, encountered moderation, and has taken it so personally that they're on a crusade against the entire website.

Stack Overflow is not without problems, but I don't think this blog post captures any of those. It's just someone with a grudge about having their low-effort question moderated out.