From the guidelines: "Please don't post insinuations about astroturfing, shilling, bots, 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."
Thanks..but don't just "word it differently"—don't word it at all. Instead, if you believe some comments are astroturfing, please write to HN with the specific details, as (hopefully) no-one here wants that, but only the mod(s) can and will do something about it.