I'm sure it's happening but if the fediverse gets big you can bet your car that they will deanonymize you in the fedi.
I think the advantage that federation provides is that there is no central trove of data you can easily access. With commercial platforms like Twitter or Reddit, all the data happens to be in one place under a single jurisdiction. However, the nature of the Fediverse is such that it's a bunch of different servers scattered across the globe. Collecting data effectively means having to make deals with each server operator on case by case basis, and governments can only coerce servers that happen to be in their jurisdiction.
email@example.com 1 year ago
I feel like we're too small to care about. A lot of us use the Fediverse but also use traditional social media so they capture from there (and though their partners).