Ah, Android, with a userspace based on Java, Kotlin, C and C++ standard libraries, Android native APIs, without anything related to GNU/Linux, unless it is a rooted device, or one gets to package a full Linux userspace as an APK, which isn't fully compatible due to security enforcement mechanisms.
I would look into those statistics regarding desktop world wide adoption, distribution per OS.
Anyone who wants it can have Termux which gives you a full Linux experience under Android with GNU tools if you want it, though.
Oh come on. :-)
Linux is not userspace. Linux is a kernel, and android is a parallel fork of the kernel. So android is a version of linux but is not GNU/Linux.
Android/Linux, if you will. We dont have to be shy this.
People using Linux in 1992 would say something similar to people using any of the current flavours of Linux.