Then I think you’d be disappointed in the performance of the device.
Android runs on top of Linux kernel, so any kernel drivers for hardware likely found/find their way back to “The Kernel” at some point. GPL mandates this and Google is very likely to play by the rules on it.
That would be a good thing because hardware folks don’t want to give out the specs for their hardware without NDAs and money (I’m talking about things like Wifi devices, telephony devices). Latest generation are the ones they hold tight, 2 or 3 back they care less about and may be more forthcoming.
To me, “Android” is really just another distribution of the Linux kernel with a bunch of apps on top that make if a smartphone. It’s the applications that give you all the look and feel, that let you make phone calls, take pictures, send texts, etc. That’s where all the tracking is done.
At the raw hardware level, a smartphone is a processor, memory and peripheral devices (Wifi, telephony, sound, camera, touch screen) so in theory you could install any operating system on it you wanted. How useful it winds up is a different story.