Yes, my router is Linux, and my TV is also linux (containers not quite, because they don't emulate the kernel, except for Windows and macOS machines, that NEED

Yes, my router is Linux, and my TV is also linux (containers not quite, because they don't emulate the kernel, except for Windows and macOS machines, that NEED to emulate at least one kernel instance, but whatever). And is pretty clear to me those limitations. More than my router, or my TV, or any embedded system for that matter, Android does try to follow other systems specifications, it has a own libc implementation, you can still utilize most of linux that we are used of: filesystems, syscalls, networking, even containerization (all of them limited and various levels, of course). That is what makes a linux distribution too me in my opinion, in the same way I can run a linux with musl libc, and busybox, I can run Android