Votes are public here, as are moderator actions, so we can actually see everything going on, including empty accounts only used to bot upvote stuff. In addition, not every platform works the same way. Some have upvotes and downvotes, some only have upvotes, some are wonky like kbin where upvotes don't count toward reputation but boosts do, etc. An upvote isn't just an upvote like it is on reddit. They also can't "enshittify" something that users can self-host their own instances of to interact.
Edit: Also, we're in the early stages right now, reddit has a decade lead.