YSK: Your Lemmy activities (e.g. downvotes) are far from private
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.
Not post, upvote. I find it interesting that you like Asian Babes (obviously you don't, it's just some information you wouldn't expect to be public or shared).
I find it’s possible to be logged into two instances on the same browser, so it doesn’t need to be more difficult than switching tabs. (That may change, I don’t know whether it’s technically desirable, but if it’s relevant to someone’s interests…)