There are bots. Some are self-identified and some even put ‘bot’ in the username. There are bots that just repost from Reddit, bots that post only articles from a specific site/publication—like the BBC bot.

There’s not as much use for Reddit-like karma farming bots because karma isn’t really a thing on Lemmy/piefed/etc. But, there are definitely bots that that post agenda-pushing content or SPAM pushing content.

I assume any account with only posts or extremely high post to comment ratio is a bot. I wish they would force participation requirements for posting.

You also have troll accounts and weird accounts that will make one controversial post and then ghost.