

You can replace the OS on most Android devices.
Specifically- devices made by Google have been unlocked allowing replacement of the software.
You still have to put together a working kernel and drivers, environment, etc.
Not much stopping folks from doing that though.
GrapheneOS, Ubuntu, and others have made headway for some devices.
Each device potentially uses different hardware implementation and features.
Watch it. Starts shortly after 44:34 on the timestamp. That should be enough context.
I searched for “One Rough Hour” in the transcript to find the section.
https://www.c-span.org/video/?538747-1/president-trump-campaigns-erie-pennsylvania
*edit: A Clip that I found the quote directly from: https://x.com/Acyn/status/1840483582433009711