Edit: obligatory explanation (thanks mods for squaring me away)…
What you see via the UI isn’t “all that exists”. Unlike Reddit, where everything is a black box, there are a lot more eyeballs who can see “under the hood”. Any instance admin, proper or rogue, gets a ton of information that users won’t normally see. The attached example demonstrates that while users will only see upvote/downvote tallies, admins can see who actually performed those actions.
Edit: To clarify, not just YOUR instance admin gets this info. This is ANY instance admin across the Fediverse.
I say there’s too much care about votes. Because someone can just give themselves infinite votes from their private instance, it makes it all the more worthless.
There’s a setting for that, it’s called the allowed list - configures who are allowed to federate with you. Beyond that - if it’s out, it’s out.
Votes are the only real way currently to gauge opinion about the post itself. IMO, if the votes system is so bad that people are starting to completely disregard it, there’s something wrong.