There is no requirement that the verification actually actually be personal information. So far, the responses have all convinced me they were of age, and zero of them have had any personal information. Only one user has included a part of themselves in a photo and it’s probably my favourite response - but it isn’t personally identifiable.

But you are also correct - we need to destroy stuff like government if provided. Which is even more work than this headache already is. So we don’t want that as a method.