I think the rest of what they said matters, though. Its not "preservable by default". If you need access to that data in any situation where your connectivity to Google or that account is severed, you're shit out of luck. The best case example is if you don't have internet. The bad case is really that "legal dispute" argument, where you're dealing with a bad actor who has power over you and your Google account. The worst case: Google themselves severs your access.