Also, all Android apps are Linux apps (when we want to avoocate Linux as having lots of apps) and none of them are really Linux apps (when we want to advocate freedom).
Android apps aren't inherently closed; I use a handful from F-Droid, for example. I'd love it if a more open collection of apps could make the Android/Linux experience on my phone as good as GNU/Linux on my PCs (but tailored to the workload that I use my phone for, of course).