It looks like you've been using HN primarily for ideological battle. Doing that is against the site guidelines, and we ban accounts that do it because it destroys the curiosity that HN exists for. Could you please stop posting like this? Also, please don't post in the flamewar style generally.
I’m a little confused why I would be flagged when most of my comment history is on topic, and it seems most of the comment history of the account I was replying to is political and divisive.
Two reasons. One is that it was you who first swerved onto a generic ideological tangent, which was the original sin of this subthread.
The other is simply that we don't see all the comments—there are far too many. It's understandable that people want us to be consistent and even-handed, but that's not fully possible. It's also not fully necessary, since someone else violating the site guidelines doesn't make it ok for you to do so. (You get a speeding ticket even though others were going faster—which of course they usually are.) But I've taken a look at the other comments now, and did some additional moderation.
https://news.ycombinator.com/newsguidelines.html