There's no way that isn't going to be abused. Some marketing or tracking agency will setup a fediverse server and just collect all data like this for free. Or worse, take advantage of a friendica instance to bombard it with requests for data collection purposes.
The whole concept of the Fediverse as social media is that all the data is public. Stop acting like these servers are giving out private data. This data has never been private, and it never will be. Data like this being shared with any other server is how ActivityPub and the Fediverse work.
I'm not sure about the downvotes part (i failed to recreate this lmao) but you can already view upvotes with mbin. Piefed solves this problem with a option to make your votes private but only with untrusted instances (but from my tests it didn't work? weird)
I get this is obviously intended behaviour on part of actpub but I'd love for there to be a pseudo-anonymous voting system too. Maybe an option to hash user credentials when added to likes to ensure that they're unique whilst obfuscating the original user.
this is an icky issue because lemmy sends votes with empty addressing, so remote instances should count them but not show them to anyone. however mastodon (and *key) sends likes with empty addressing too, but considers them public. lemmy is (surprisingly) right here and should request that the rest of fedi respects the protocol and hides stuff based on its addressing. maybe open issues on mastodon and friendica
also this issue probably exists when seeing lemmy posts on any microblogging instance
This isn't just a Frendica thing; you can see this from Mastodon, mbin/kbin, etc. Many people seem to think upvotes and downvotes are private, but the reality is that they're publicly available information by default in ActivityPub. Lemmy just hides the information on the front-end for "normal" users; If you're a moderator you can clearly see everything.
If one wants truly pseudonymous voting, they're free to try out PieFed. See the announcement post for this feature for more details.
I mod a small community with like 6 monthly users, I'm the only one who post or comment and the average post have 3/4 upvotes and 1 downvote. And I always ask myself who is downvoting my submissions, because it's make no sense to me that someone take the job of pressing the downvote button on a link to a EDM set. Couldn't they just block the community?
I was thinking just now how there seems to be people who downvotes threads for no apparent reason, even seemingly innocuous and neutral ones.. for example "Kingdom Come has sold 2 million units" 3 downvotes; "This New Algorithm for Sorting Books Is Close to Perfection" 5 downvotes; you get the idea. Now everyone is entitled to their opinion, but It makes me wonder if someone(s) is spam downvoting for some motive.
Who cares? If your upvote or downvote or any other activity you deliberately perform on a public platform is something you're embarrassed about and wouldn't be willing to do in a face to face engagement you probably shouldn't be doing it.