If one does a normal rollback, the user name is always written to the summary. This behavior of the software causes countless insults to be spread.
I therefore suggest no longer writing out the names.
This works without any major changes as there is already a function that creates links without user names (Userid). Example Special:Redirect/user/101.

For implementation:
This can be implemented in two ways.

1. by default for all users.
2. adding an option in the preferences so that users can decide for themselves whether they want the ID in the summary or the name.