You expect political drama submissions not to be flagged as offtopic?
It's possible that account is banned, but more likely your self-posts might be getting filtered by HN's software which tries to apply this guideline: "Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity.:.
The issue is that "X used fake accounts to push political agenda on social media" might be interesting political news, but it's incredibly boring technical news.
Everyone knows that this is possible, and the only novel information here is political.
I'd say that if you posted news which are interesting in how they relate to tech, and also political, you're going to (or at least should have) more success than this article. Even just a proper analysis of how widespread fake political social media accounts area, deeper statistics, more novel processes of this happening, etc. would all be interesting, and would not fall in the politics-first-tech-second bucket.
Technology is political (as this article is a testament to). Technology is used to commit humanities worst horrors. Us tech workers do commit our work which enables these horrors. It is hard to admit that we are partially to blame, and that our industry is part of the problem. It is much easier to simply close our eyes and claim: This is just politics, and hence, none of my business.
EDIT: To clarify, I don’t agree with your parent that there is some astroturfing campaign going on on HN where state agent propagandists are mass flagging stories. I do however believe a lot of HN users are this lame, and don’t want to admit problems in our industry.