FWIW, my engineering school's IT team still has Minitels in use in their various server rooms, because it can be used as serial console for a variety of devices (you know, just in case everything is broken and physical presence is required). The Retrocave Man should be able to do the same and enjoy our AZERTY keyboard.
AZERTY really is a terrible layout though, I can't find anything it's good at, not even typing french. You can't write É, È or À on a standard AZERTY keyboard for instance. If you're programming you're going to have the alt-gr key pressed half the time but admittedly that's mainly because programming languages are qwerty-centric. But hey, you can type 'µ' with a single unmodified keystroke!
More like US layout centric.
EVen the humble unix CLI is a straight pain on anything but a US keyboard, as things like / now require a modifier key.
Funny thing is that There is a variant of the US layout with the right alt being alt-gr, allowing most languages that use latin script to be typed.