So does email. 10 years ago when fiatjaf joined the ripple users list he introduced himself as Giovanni Parra, and that was the display name on his email. We all called him Giovanni for years. Same on other places such as github issues, etc. He then changed his display name to fiatjaf, and we all called him fiatjaf, after that. Is someone wants to use a real name let them. If someone wants to use an alias, let them. Protocols working as expected.
Discussion
This feature is not in place to prevent or punish nym changes, but more to keep other users informed of the changes (assuring that it’s the same nym they knew before) … cause people DONT think to double check npubs or Nip05 addresses and wonder “why is this person in my timeline?”.

