This extensions assigns the newly created user page to the user. I think it should be possible to set a specific user to whom the edit is attributed like it is possible for the NewUserMessage extension or other extension creating content automatically. I believe it should be possible to see that not the user created the page initially but a "bot". Thanks for considering this enhancement.
Topic on Extension talk:Create User Page
That sounds like a great enhancement. Could you please add a Phabricator task for it? I will try to get to it soon.
Now tracked with task T250010. Thanks a lot for considering.
Thank you! I have uploaded a patch. Once you have a chance to test, please give it a +1 if it's OK.