Probably9857 I am not really sure about that in some really weird case:
There is an app that works as login app and as well as auth app(getting push-notifications when loggin on diff device), and when you wish to logout it will throw an error that you cannot logout because this app has active auth method set up.
So that is the issue, it is by design issue.
Thats why I am asking if there is an option to lock it on OS level under some diff mechanism than app iteself.