The rule is that you can't make insinuations about astroturfing or shillage without some sort of evidence. Another user having different views than yours—even when you find them wrong, or even perversely wrong—does not count as evidence.
https://news.ycombinator.com/newsguidelines.html
https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
https://hn.algolia.com/?sort=byDate&type=comment&dateRange=a...
I get accused of all sorts of things because we enforce this policy straight down the middle. Guess what: I'm not a secret communist agent. I just don't like mobs.
The issue is that HN has guidelines that people need to adhere to. It's not ok to break those, no matter how right your side is or you feel it is. Moreover, there's no need to, because you can make a much better case for your side by following them.
"Please don't post insinuations about astroturfing, shilling, brigading, foreign agents and the like. It degrades discussion and is usually mistaken. If you're worried about abuse, email hn@ycombinator.com and we'll look at the data."
You can believe what you want, obviously. But understand without evidence, your claims are baseless.