[stubish]

Sure. At the heart of it, the system just attests that a document is true. That document might say 'the holder of this token is over 18' or 'the holder of this token is a meat popsicle' or 'the holder of this token should look like this photo and is licensed to drive'. It could even attest your actual identity, which might be useful for banking purposes. The trick to preserving privacy is to only reveal the minimum necessary information.

It is an interesting idea you bring up. These sort of disinformation campaigns are making news everywhere, over and over, and this mechanism easily adapted. Like a blue check mark but actually useful, being able to tell social media posts written by a bot farm apart from social media posts written by an arsehole.