On every thread or post, if you click on more and activity, you’ll get the info.
I personally find this to be a good things, I’ve seen people using downvote way too easily. I like the idea that we need to be somehow accountable for those mechanism.
edit: It could be somehow improved to have an option to let this info only available between concerned users.
edit edit: I think that up/downvote info shouldn’t be public, but kept private between the users involved. we need to address this privacy issue.
I’m far from an expert on this sort of thing, but I would wager that the only voting data available through Reddit’s API is the current number of up and downvotes, the overall vote score, and whether the account requesting the information has up or down voted, for any given post / comment.
It can do that because the data is centralised, and every account exists in one place, whereas federation has to say “cavalarrr@kbin.social upvoted this comment, and so did username@beehaw.org”, because there’s nowhere to store that data centrally, other than the post itself.