My theory is difficult to test but I want to believe that users unable to delete their accounts isn't from malicious intentions.
For those Phukers who have tried and failed at deleting their account; did you post or comment in disabled subverses?
My theory is that the deletion code can't run properly if you posted in subs that are now disabled.
Have no idea how a coder would fix that problem without reopening all the disabled subs.
I will test the sub ban theory with some new accounts later and see if it makes a difference. The fact that some accounts are deletable and some aren't is extremely odd though, it has to be caused by something like this.
It means that whatever process is actually going on when an account is deleted is unnecessarily complicated.