What I'd like ICQ to do is something like: Recognise that the account has been unused for a decade and that it doesn't matter if I am an imposter and agree to clear the profile at least.
Or, provide some hints to the email address and see if I can complete it.
Or, ask for some sort of proof of ID, given that the name is real and fairly unique.
Get rid of their dismissive don't-care "there is no way to delete an account, just edit your profile to clear the details and forget it exists. If you can't get back into your account with the email-me-a-password feature then that's it, you will need to register a new account" policy.
Or, at least, have some way of talking to them and someone who gives a toss. The forum has lots of completely ignored "please delete my account" posts - I've even seen three with passwords, at least one of which works(!). I was going to be nice and login and reset the password - but the only way to reset your password is from the ICQ client(!). Sod that.
ICQ wan't tell me the password unless I can remember and still access the email account I had 10-14 years ago. ICQ has, apparently no way to contact them and no other way to delete an account. Great. Thanks, ICQ.