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 don't buy it. Deleting an account should be a simple SQL command.
DELETE FROM table_users WHERE user="chmod";
Since your username is the key to all your activity just deleting the user should either delete everything, or it deletes the username but leaves all the activity in the DB without a key. Either way you should be able to delete your account.