The problem isn’t content, it’s engagement on the content. Folks complain that niche communities have no engagement, just a bunch of posts by a single person… but it feels like 95% of the time, if I comment on those posts, there’s no reply, not even from the OP, and that discourages further posting.

If you’re willing to engage on everything you post, I don’t see the harm in it, but at that point, why even use a bot? Why not just find content you like (or have the bot notify you of content), then post it yourself as an actual human?