Point of right is to stop newbie third parties from blocking themselves. Wikimedia has all sorts of help to deal with that situation, so we should not give anyone unblockself. Or at least limit it to say stewards/crats so they can deal with the case of a compromised account that blocks everyone, but we still stop average admins from unblocking themselves.
Summary of this ticket and changes that have been made
In Nov. 2016 this Phabricator task was opened proposing to remove the unblockself permission on all Wikimedia wikis. In November 2018 some administrator accounts were compromised and the vandal was able to unblock themselves and continue harming the projects.
- The proposal to remove the unblockself permission was raised on an English Wikipedia Village Pump thread on November 23. On November 25 this Phab ticket was pinged. On November 26 a patch to remove the permission was uploaded and merged for all Wikimedia wikis.
- It was also suggested to allow blocked admins to block the user who blocked them (but not others). That removes first-mover advantage and the situation will mostly be at a standstill until stewards come and clean things up. There is a patch was merged on December 9.
- There is still an unmerged patch to rate limit how fast an admin can block other admin accounts.
- Self-blocks (e.g. User:AdminApples blocks User:AdminApples) have always been able to (and will continue to be able to) unblock themselves.
See also summary of comments from Nov 15 2016 to Dec 4 2018: T150826#4798765