alt Hacker NewsDon't you think that as LLMs get better the deanonimization attacks will get easier?
Also, a journalist in a hostile regime might be one example, but a user that posted _very_ personal things under an alt account is also another example, and I bet the latter is much more common than the former.
Do you have enemies that would be interested in spending real money trying to link your public accounts to some (possibly existing, likely not) alt accounts with "personal things"? I don't think that's very common.
And no, while I'm sure LLMs can be used for stylometry in academic exercises, I don't think they'll really enable any sort of automatic mass-deanonymization of random social media accounts. But who knows, the US government probably has a bunch of new PRISM-like programs going on already, so it might happen.