Off on a tangent here, but I think now is the proper time to say that people, when it comes to security, have no idea what’s good for them.
Before Google implemented this cloud sync feature, people were constantly complaining online about how they really wanted their TOTP codes to sync when they got a new phone. Nobody stops to consider the security implications of chasing convenience, but if you stop to warn them, suddenly you’re the bad guy for creating problems or “opposing their solution”.