Yes, they have two date systems in common use. It’s only the year that changes though. And there’s no way to confuse the two, usually. If you write “2023” instead of “令5” it’s pretty obvious. I suppose there is a potential for confusion if one just writes a two-digit year though.
I would love to do something like this, except it’s way too goofy with the attached controllers.
Steamdeck in a tablet form factor would be perfect.