In several recent wiki editing workshops I conducted (with a total of a couple hundreds attendees, I think), the main obstacle users encountered in creating their user page was the ContentTranslation popup which absurdly suggests to translate the userpage from another language.
There are very few cases where ContentTranslation may be userful in the User namespace, and none when one is editing (creating) a userpage (i.e. non-subpage page in User namespace).