maybe the account creation process for nostr can help here, not everyone is going to want to go back to being anonymous online, but not every post will have to be associated with one account, you can have multiple accounts for various groups that don’t allow, or will at least slow down, the profile merchants
Discussion
Threw this out there a while back - 'Toastr - Burner ID - Easy UX'
ephemeral is so much more elegant than burner, lol
Toastr is a great name