Commercial displays often aren’t better quality in the way that a consumer wants. They’re usually intended for static images, quick and simple animations, and for being kept on 24/7, not for high quality video and audio.

My high resolution EGA display has all kinds of colors. Up to 16 at once, even.

According to the article:

Toggling the switch on should automatically release the GPU latch

He already had one for the last record he had in it. It seems redundant to do the same video twice.