That article is long outdated. Mainline and Android kernels have mostly converged at this point. But that's also wholly unrelated to the specific context here

That article is long outdated. Mainline and Android kernels have mostly converged at this point. But that's also wholly unrelated to the specific context here which was Wayland vs. SurfaceFlinger. Wayland was your "huge damaging rift" here if anything. Divorcing itself from both xorg and surface flinger, for no particular reason at the time in the case of the later.