"One would also expect Applescript / Automator (Apple's built-in macro tool, a-la AutoHotkey / xdotool) to work with native apps, but it doesn't work on ARM Macbooks."
This is completely false, I use Automator, Applescript, and Folder Actions near daily on my Apple Silicon Macs.
I have my Automations and Applescripts fail regularly, and I saw it discussed as one of the things Apple stopped maintaining after the move to ARM. In my experience, it doesn't work. (Of course, I can't compare to how well it worked on x86...)
I think you might want to double check that. I only moved to macOS after the M1 launched, and all of my automations and AppleScripts work just fine with no issues.
This is completely false, I use Automator, Applescript, and Folder Actions near daily on my Apple Silicon Macs.