That all said, I've heard news about Android getting degraded by Google to be more like Apple. Hope its rumors, but at least I had a good decade+.
That said, it has to be compiled for older Android SDK level because newer levels prevent apps to run executables they downloaded on their own and not bundle with the APK, even isolated. Android may disable compatibility with the older SDK some day but for now it works.
That's what I get for sticking with 32 bit ARM chromebook. Lightning fast. Great battery. Old OS.