tgrushka I also wanted to set up a tablet for an elderly friend using Graphene in "kiosk" mode, but now I have to figure out how to help her bypass this screen if the battery ever dies.
I don't have a Tablet, but on the phones there is no need to do anything about the different-OS screen except to wait a few seconds for it to go away.
tgrushka Shaming consumers into using their OS even though we purchased the hardware outright seems to be the MO here. [...] Google will simply say that they don't have to make installing / booting a 3rd party OS accessible. And with the current U.S. administration, sadly, they are correct, and meanwhile, they have over half the nation convinced there is too much regulation.
Here I'm not following. Which nation? Are phones from other companies better? Do EU regulators mandate minimum font size for the bootloader?
Something can be non-ideal without being deliberately nasty. And if Google is currently offering the best deal in terms of secure phones supporting third-party operating systems (personally I think so) then arguably criticizing other companies would make more sense than criticizing Google?