User blog comment:Kirkburn/Technical Update: July 25, 2016/@comment-24014422-20160728191617/@comment-24473195-20160728193850

> Just curious to know, what is the purpose of having someone's own userpage locked by Admin and not editable by himself

For many reasons. Some vandals keep editing a page to add advertisements, to vandalise and so forth. Although I'd agree that it is kind of odd that there is no page protection that allows a page to only be edited by its owner, moderators and admins. The most compelling reason to block people editing their own pages might be to prevent them from putting illegal stuff on it. For instance, even admins cannot edit users' javascript pages. So a user can easily add Spam, insults, illegal materials, and just about anything they like. The only recourse at that point is to delete the page, and / or asking staff or VSTF to clean it up.

The most compelling reason not to block user pages by default is that admins aren't always around while other users are and can help clean up the mess, and that's the "Wiki" way. Wikia changed this for threads, blogs, and comments, and automatically prevents others from editing our posts.

Edit:

Apparently ONLY staff and maybe VSTF can delete user. js pages....