I'm sure there were plenty of even gankier ones prior since by that time he already had his nice logo sorted out, a pretty good broadcasting setup, and more. In any case, here's his latest video: https://www.youtube.com/watch?v=Q1bSDnuIPbo
1. Produced-for-broadcast-TV content has the highest production costs, and the lowest technical detail. Example: Scrapheap Challenge / Junkyard Wars.
2. Midrange youtube has medium-low production costs, and medium technical detail. Example: Project Binky.
3. University lecture youtube has low production costs, and high technical detail. Example: Look up 'laplace smoothing'
Of course, it's far from an absolute rule - clearly, you can find low-technical-detail content in any production cost band :)
No way for that sample to be biased.
On the other hand, your sample may be also biased, so it goes both ways.
That would tend to fit with what I've seen, but that's a pretty small/biased sample.