Honestly I wouldn't be surprised if this started happening at Lemmy too. Its a lot easier to control what kind of content is on a platform when you do something like this.
Now, I don't particularly think this is a good idea, but I can see the benefit of this as well. People have the freedom to upvote whatever they choose, even if I think they are dumb for doing it, and they shouldn't have to worry about anyone other than law enforcement or lawyers (in extreme edge cases) using that information against them.
Honestly I wouldn’t be surprised if this started happening at Lemmy too. Its a lot easier to control what kind of content is on a platform when you do something like this.
If lemmy did this you'd see forks ripping this out, not to mention anything other than lemmy would not have it, so only a very small subset of the fediverse would be subject to this at all, making it perfectly useless