Well, I flagged it and I imagine others did too. It's not an 'Ask HN' it's 'Yell my opinion at HN while pretending to ask something'. Which isn't that great.
It has to be flagged enough to get that tag. As to 'commenters are commenting', that's not the criterion for what makes a good post. You're basically trying to stir up a silly fight. Sure, that gets upvotes and comments. It's still bad.
Hm, ok. Would it have been OK if I hadn't posted it under "Ask HN"? Surely this site supports sharing opinions like this one in some contexts -- it's not like this was a political shitpost or something. Right?
Probably but the result would have likely been similar. The standard is supposed to be a bit higher than 'isn't a political shitpost'. If you have something interesting to say about this, you can always write it up as a blog post and submit that. If you just want to vent a bit, it's probably not going to get too far as a post.