> Not by legal mandate! And especially not a universal one that applies to FOSS!

How the fuck do you think these sorts of standards are created? The companies involved aren't going to do it out of the goodness of their hearts. That doesn't exist. So you've got multiple competing private standards which are all more privacy invasive or an option when you setup your account to specify an age that is reported to anyone who asks and is required to be accepted as true. The alternatives currently are uploading your photo ID to random websites to get access. And you think that's a better solution?