Like I said, that's just my opinion. I don't watch much TV and am away a lot for work. I don't think I've turned my hotel room TV on in more than 10 years! But I do watch a lot of Youtube, and have seen what seems to work and what tends to come and go.
The problem is as I said, I have literally a couple of dozen different types of videos, and people subscribe for different reasons and want different content. In short, everyone has their own opinion of what they would like to see from my content and I have to please everyone.
The numbers for example actually show that educational tutorial videos are some of my least viewed videos (with some exceptions), so if I was a numbers/business guy and wanted to grow my channel, more educational tutorial content would not be the way to do it. Even 30-40min Mailbag videos are more popular than 15 minute tutorials.
And as I said, I am perfectly conscious of video length, what works, and what doesn't. I am trying to make my videos shorter and more concise, and I'm always refining my content in some way, and that's the best I can do. I can't be all things to all people, it's impossible. For every person who complains my videos are too long at 30 minutes and wants 15 minutes, if I then do that there will be two more people who will ask why I didn't cover X in the video. Then I have to explain to them that I did shoot that material but cut it out to make the video shorter. But why not just throw it into another video they ask. Well, that sounds great until you realise you had to have planned that and shoot an intro and some matching content, and it needed to be shot as a series, and that I didn't have the time or inclination to finish that because something else interesting came along that I wanted to make a video on. etc etc.
It's easy to say create a 10 part series on FPGA's, it's another thing to actually have the time an enthusiasm to do that at the expense of the dozen other types of videos a creator wants to do.
And making shorter content is often easier said than done, especially using my style of video making which I have no intention of, and would be foolish to change.
One electronics youtuber spends 30+ hours on
one 5-7 minute tutorial video. Shorter and more polished content takes time.
Don't even ask how long it's taken David2 to create those short tutorial videos he's done, it's crazy, the more concise and polished you intend to make it, the more paranoid you get about making it so and getting it right. I do not want my videos to become a chore to make, if that ever happens that's when I give up the game.
Remember that Microphone tutorial series with Doug Ford? I split that into 7 shorter parts to make it easier for people to watch. What did that get me? Countless complaints from viewers about me "flooding" my channel with stuff they didn't want
If it's short tutorial videos you want there are other channels that do that, mine unfortunately isn't one of them, but thanks for your feedback.