I figured it’d be something similar to that, interesting!

Fujoshi (腐女子) is the Japanese word for what you’re mentioning, which I’m sure is not what they’re using China. I can offer no further insight than that.

I have no doubt it’s incredibly easy to dox someone from upvotes alone. Maybe not on lemmy because interactions are just a lot more infrequent, but on reddit if you upvote posts about Omaha Nebraska, retro game collecting, Subaru wrx, and e bikes, you really narrow down your choice of people. If you just had one other bit of information about the user, like just a general photo or where they went to high school you could definitely nail someone down.

I really do hate this part of the Lemmyverse and wish it was all obfuscated. That with it being impossible to delete your posts really limits how much I want to interact with the site.