Fediverse

(which is basically all of them)

This is true for Kbin, but I don't believe I have come across a Lemmy instance that shows you who up/downvoted you. Hell, as far as I know most Lemmy instances hide "karma" too. You have to check these things from the Kbin side (unless you spin up your own Lemmy instance). Which is the reason this whole thread started.

the only way you're going to get it back inside is if every instance was to agree to hide this information and defederate from any stragglers that don't.

While it will be impossible to prevent those actively seek out this information, most people will still flock to the largest instances. A percentage of those will be inclined to want to abuse voting info. If the big instances obfuscate it, maybe some amount of harassment can be avoided. Even the friction of having to switch accounts to check will be enough to prevent some heat-of-the-moment reactions.

IMO hiding the information on a few individual instances is only going to give a false sense of security.

I guess that's the trade-off. Having everything easily and openly accessible makes things easy for trolls, stalkers and harassers; obfuscating it might mislead users into thinking they're anonymous.

Then they know the information is out there, and they can use it themselves to spot people who are abusing the system

Thank you for the answer. I'm still not convinced it's not worth trying to hide it, but that's a very fair and valid stance.

And regardless of whether you think it's "good", the information is out there.

That's true. And regardless of how an instance decides to run it's voting policy, it's an important fact to make the users aware of.