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 agree, I think separate tallies for up and down might be a really great thing.
On that other place, while lots of downvoting is “obvious”, a lot is really odd, like someone posting a technically correct, documentable, verified answer, and it gets downvoted? Also black-supportive or LGBTQI+ stuff gets downvoted at times. 9000 ups and 9000 downs at the same time would be umm interesting.