So?
You can't compare Android to macOS. Compare Android to iOS, which had many more limitations built-in from the start than macOS.
Incidentally, this is why iPad has never become the desktop replacement everyone claimed it would be. The hardware is plenty powerful, but it's always been very limited by the software. The greater freedom and capabilities of macOS is a huge advantage for desktop-class functionality.
I think I disagree. If iOS or Android added robust support for external monitors, external keyboards and pointing devices, I'd probably switch to it to get the increased resistance against attacks.
If I could continue to run Emacs, e.g., in a VM like WSL2 or Crostini, I'd probably switch right away. If not, it would take me a year or 2 to transition to a replacement before I switch (and, no, that replacement would not need to be able to run software written in Emacs Lisp: I'd be happy to replace, rewrite or walk away from any functionality I currently get from code written in Emacs Lisp).