Does ActivityPub send those to other instances, or does ActivityPub only send the original post and the rest (upvotes, downvotes, replies) are stored only on the original server where the post was made?
haven’t worked with AP yet, but as a webdev I’m certain it’s original server only. Syncing upvotes between nodes would be an insane datavolume and one hell to properly keep in sync to begin with.
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Honestly votes being federated seems like a bad idea imo. Would be easy to spin up an instance with thousands of fake users and manipulate posts.
Fediverse is already big enough that it could be lucrative to do so.
So then everyone just blacklists that instance. If the problem is really severe, we move to whitelisting.
It’s not hard to identify when someone is doing this.
Technically votes are public. Only UI is hiding them. Which should be resolved, one way or another.
Edit: there was a post with that here a few weeks ago. I understand that this isn’t a real answer to your question. Maybe you find it with these hints.
Edit2: Found it. Here you’ll find more. https://mylemmy.win/post/89871
Meaning admins are purposefully allowing other people to brigade others with alts.
Lemmy fucking blows.