While humorous (getting a death certificate for someone who isn't really dead) the money is in the virtual births. I don't doubt for a minute there are entrepreneurs who use that to create new identities for people or fake dependents (welfare fraud).
It's less than humorous. Once bogus data declaring you dead works its way into the system, credit cards get shut off, accounts get closed, and you're liable to have serious problems with your bank.
Your correct, it isn't funny, but when the Social Security administration decided my wife's uncle was already dead and he needed to pay back benefits they sent, she had them talk to him on the phone, where they tried to explain to them that because he was dead he needed to payback excess benefits.
Well at least for virtual births, given the trend of fingerprint storage, once the real virtualized baby is of age or otherwise required to submit prints, the other identities are pretty much useless.