Would I say the same thing on YouTube or reddit? Of course not. That would end in a flamewar in milliseconds, but this is HN. I expect (and I wasn't disappointed) than HN readers can discuss divisive topics without any flames.
HN is constantly at risk of going up in flames—it's a large, open internet forum! If that doesn't happen, it's because the mods and most of the community are working hard to prevent it. We need you to help with that, not take advantage of it—and in any case the rules are supposed to apply to everybody (https://news.ycombinator.com/newsguidelines.html).
You can't judge these things by whether a particular case turned into a flamewar. Not every fire burns the house down. It's a question of effects in the long run, and your post was way on the wrong side of that line; which is why the guidelines ask you not to post like that. Fortunately it doesn't look like you've been making a habit of it, so this should be easy to fix.
I realize the topic is provocative but that's why the site guidelines say "Comments should get more thoughtful and substantive, not less, as a topic gets more divisive."
They also say: "Don't be snarky." and "Eschew flamebait. Avoid generic tangents." - so you broke a lot of them here. If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful. We want curious conversation here, not indignant rhetoric, which is its polar opposite.