Yes, please don't overreact. We don't need Google micromanaging what goes into the market. Then any good idea that Google didn't think of first will suddenly become a "security risk".
It would be sufficient to get strong verification of the identity of sellers in the market. Then if one of them is a malicious hacker, there is plenty of evidence to put them in jail.
Ebay doesn't vet its products either. It doesn't even enforce its own guidelines until someone complains, or the item gets mentioned on CNN. But they are quick to turn any information over to law enforcement just for the asking.