[caminante]

I agree with your critique that stylometry overrides throwaway accounts.

The issue is "deleting."

AFAIK, nobody's disagreeing that the internet can forget and deleting is "better" for privacy.

The question is "how much" better.

Here we're talking about the false sense of privacy through erasure when archivers should be assumed to be running everywhere and at all times. The latter weighs in favor of the parent's critique that deleting is not constructive.