Tbf Android is also starting to converge back toward mainline. AOSP is one patch away from booting off of it, assuming you have drivers. To that end, Google is

Tbf Android is also starting to converge back toward mainline. AOSP is one patch away from booting off of it, assuming you have drivers. To that end, Google is beginning to move the ecosystem toward a generic device kernel, with a set of hardware interfaces for handling those drivers in a standard way across devices. This would enable custom kernels to target a range of compatible devices at once, which (among other things) would then simplify porting over alternative Linux-based OSes. Including the convergent ones we're starting to see pop up on way less impressive hardware.