Late to the party, but it seems IceShrimp doesn’t have the same built-in import feature as Sharkey for all posts. IceShrimp also doesn’t have any of the gamification that Sharkey does.

I can’t tell about Misskey, but there’s some mention of a tool.

Does Lemmy have any features that resist this kind of astroturfing?

No one would consider bots talking to one another a real conversation, but is there anything regular users can do?

plus televised caning.