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8 小时前I think it is accessed through xdg-protal, and the usage tracking and permission etc. likely happen at that layer.
The xdg-desktop-portal project is adding an age verification portal (flatpak/xdg-desktop-portal#1922) that needs a data source for the user’s age. userdb already stores personal metadata (emailAddress, realName, location) so birthDate is a natural fit.
I mostly eat vegan food, and find beyond meat reasonably keeps my meat craving at bay. But I agree it is not the same as meat.