Board Thread:General Discussion/@comment-27493717-20180601151233/@comment-1038387-20180601155303

I doubt they do anything - they'd have to verify the identity of both the user (based on an email adress or even less) and then also that the person informing them is a relative with the authority to handle their affairs. This is not a paid service, so there is no practical need to terminate the account.

Of course, if you want to know, you could ask staff at Special:Contact/general.