Sorry if this is getting into bikeshedding territory, but is there a
organizations can't use the ~ prefix as well? It seems to already work fine for
users, and I'd assume you wouldn't want users and orgs having the same
usernames anyway. I don't see a benefit besides recognizing from a URL
that you're dealing with an organization, but even that seems like a solution
in search of a problem.
Re: Supporting user groups/organizations on SourceHut