For the specific hardware / tinkering / actual tech workspace atmosphere, I’d add Pi (1998) pretty high on the list. The whole film has that improvised basement-lab feeling: custom-built machines, components everywhere, cables, monitors and a setup that looks like it has been kept alive through...
I think the distinction between a review and an analysis/essay is the important part here. If I'm deciding whether to spend two hours watching something, I usually don't need a seven-minute video explaining every theme and production detail. A short synopsis, a few useful observations and an...