The only sane way to buy a device is to pick a user-representing OS (eg Graphene), pick a device from its list of supported devices, and then install your desir

The only sane way to buy a device is to pick a user-representing OS (eg Graphene), pick a device from its list of supported devices, and then install your desired OS on that device as soon as you get it as part of your setup process. Then if it's 24, 48, or 168 hours to receive your unlock code to install the secure OS, it's all just part of the setup process (and if they refuse to unlock for whatever reason, then you're still in the return period!). The longer you let the surveillance industry keep its hooks in you, the more friction and dependence they will add to every single thing you want to do that goes against their business interests.