You may have different personas that you want to separate. Ie your identity as a local county representative, your identity with a socialist online forum, your

You may have different personas that you want to separate. Ie your identity as a local county representative, your identity with a socialist online forum, your identity as employee, your identity as someone discussing weird sexual kinks. For all you need to identify but you don not want them to be linkable to each other or your government-issued ID. This is part of why relying on phone number validation for gatekeeping is an issue. (Try registering at Discord or Twitter via tor. I'll wait)