IMHO; Android and to a lesser degree ChromeOS (as well as other similar platforms) don't quite count as "Linux" for purposes of "the Linux desktop" as they've replaced nearly everything above the kernel with their own stack[0].
[0] Last time I used ChromeOS it was still mostly in line with ordinary Linux (thought it might have been partially Gentoo based?); but a rather impractical one as it's less than simple to run [things that aren't Chrome]. Heard about Xorg getting replaced at some point, I'm unclear on if that actually happened.
[0] Last time I used ChromeOS it was still mostly in line with ordinary Linux (thought it might have been partially Gentoo based?); but a rather impractical one as it's less than simple to run [things that aren't Chrome]. Heard about Xorg getting replaced at some point, I'm unclear on if that actually happened.