Earlier quoted context omitted.
This is the _biggest_ thing holding MacOS back?
Reboot for an upgrade happens by holding a spin lock until it overheats and reboots. This happens every time on multiple computers so I think it's intentional(?) but the crash reports are pretty wild. No official package manager. The Macbook cases ground through the user when they're on an insulated surface (there is no ground pin on the Macbook power adapters). Audio crackles when the machine grounds through the use…
Usually, I was able to get it to complete whatever it was trying to do and log me in by holding it directly in front of my air conditioning unit (this was as ridiculous as it sounds), but a few weeks ago even that didn’t work. I had to completely wipe the machine and reinstall macOS. It’s been fine so far.