I think here are many experts available. So I would like to share my expectation. I have a contractor who is working on my site. I made my contractor the administrator of my wordpress site. I am also an administrator. I would like to ensure that my contractor can't delete my user account. I can't change my contractor user role to editor/subscriber/other, because I have to hand over the right to edit my theme.
So, is there any way to confirm that my contractor can't delete my account?