[with]

everyone in the comments is talking about stylometry and rewriting your posts with LLMs. the paper barely uses stylometry. the attack surface is semantic: your interests, your city, the conference you mentioned once 2 years ago. you can't rewrite your way out of having said you work in fintech in austin and own a golden retriever.

[comrh]

you can intentionally add false biographical information. what if you had a bot posting responses in subreddits for cities across the world on your account

[gaigalas]

That's adding noise, not removing metadata. One can filter the noise.

Your interests can show up in all sorts of ways. Perhaps it's not saying "I like Madonna" on some social network, but the urge to interact with one specific song she recorded. One like can be the difference of giving away who you are or not.

With AI, there's a higher chance of active deanonymization tactics. This was possible for only select targets in the past. It's the creation of content or design of interactions that is meant to surface certain behavioral patterns (such as offering you that song "casually" in some timeline to gauge if you're going to interact with it).

Trying to mask or change your behavior is likely to result in a weird and very noticeable presence. Like trying to change how you walk will often lead to a caricaturized behavior, not something that someone would naturally do.

Acting naturally is probably the starting point of any attempt to prevent deanonymization, and the hardest to achieve. You have to be aware of your own behavior much more than people often do.