@mdhughes Yeah, I'm guessing if I poked at it some more and bothered opening Xcode again, I could find some cracks in the garden walls. Adjust some of my hacks to accommodate it, etc.
Some things seem to need more hacking than I want to bother with though. Like, sideloading via dev tools looks like a thing that works but has limits and needs periodic re-permissioning.
Under Android, I had my last Samsung phone running game emulators. Used Syncthing for sharing files between personal machines that aren't all Macs. Had a full linux desktop with VSCode if I plugged it into a monitor & keyboard. Could run shell scripts and run servers. Didn't even have to root it. Got a bit of work done that way, though it was a bit of a novelty.