The linked article — and others — explain that in Android 10+, (a) executable binaries can no longer reside in a read/write directory, and (b) access to /sdcard will go away. Simply put, these changes destroy my application’s ability to function, and that of Termux as well.
That sounds like proper security to me? Inability to access the user’s storage is a bit lame, but they’ve been moving to nicer APIs for that anyway.
Android is a mobile phone OS, not desktop / embedded Linux.