

Google already refuse signing releases for GrapheneOS on the pixel.
Do you mean how you get a special boot screen implying you’re doing something sketchy?
Google signing things is not something we want. We want phones that don’t care if your OS is signed by Google, and banking apps that trust you to pick an OS.

The California law doesn’t require age verification, just a setting on the account that e.g. a parent can set. It’s still stupid, but it’s not what apple is supposedly doing here.