alt Hacker NewsThere is very little with a) high technical quality in the presented content, b) an assumption that the average viewer is reasonably intelligent, and c) high production quality.
The Computer Chronicles was kind of unique that way.
Edit: OTOH I just saw a 55 minute well-produced youtube video on ASML's EUV photolithography machine that fulfilled all of that. I had some bias against this channel for some reason I don't remember, but anyway: https://www.youtube.com/watch?v=MiUHjLxm3V0.
Veritassium is in a league of its own. Just take a look at their last year's videos. The production value is just second to none.
They have enough of a following now that they can dedicate 55 minutes to something and not worry about the algorithm, which usually dictates much shorter form factors