I'd much rather see more concepts stuff like this, that you can then use with the manual that came with your specific instrument. A specific video on a DZ1054Z does me absolutely no good, I have a Siglent SDS1102CML. If you understand the concepts, you should be able to implement them on any model/brand instrument that has the corresponding feature. If the manufacturers want to make specific videos on using their equipment to go along with the user manual, great (Keysight does), but I think someone like Dave is better off covering various concepts and use cases in general terms to appeal to a broad range of viewers and be actually useful.
Dave just essentially made a post about this. Technical videos get the lowest number of views. I'm guessing people fall into 3 groups:
1) Material is "beneath" them so they don't watch.
2) Material is "boring" or not relevant to them so they don't watch.
3) Material is "above" them so they don't watch.
You can't win. At least not without boobs and a low cut shirt.
I think he got it right with the "Here is how to not blow up your scope" video, and then send people off to go play. We are engineers after all. That's what we do!
Plus if you think about it, a long Youtube video is possibly the worst medium for a "how to" type thing. If you were going to make a series of "This is how an oscilloscope works" videos it really should be a series and you should keep them on a single topic and under 1 minute each. The titles have to be super clear and concise and geared towards what people will be searching for. So when you search, "how do you trigger an oscilloscope" you can get your info and get back to whatever you are doing and not have to watch 2 hours of video. It doesn't have to be a comprehensive deal. Basic concept and move on.
Every time I have a "I learned this from a Youtube video" moment, the one I actually watched is always a short targeted video without a bunch of filler and down time. If it has too much of a guy standing there talking and not doing the thing I came for, it get skipped. Unless there are hot chicks...