I made that video. That’s a bit of a misunderstanding. The A06 Armbian has a regular debian packet manager. You can do a “apt get-install” for a whole bunch of software just fine.
It gets tricky if you want to used software that is not covered by the package manager. TIC-80 being an example. You can‘t use the Rasberry build. You can‘t use the Linux build. You‘ll need to compile from the source.