Well, judging from one year of tutorial video production ...
- Creating a concise and accurate tutorial is (really) hard work
- We manage to create about two per month
- It's a full-time job for Valleyboy, who gets paid more per year than we make in PE sales
- Most of the time is spent researching the topic, writing the script, and checking it for errors
- There's always the danger that a video will become obsolete with a change in the software
- people are four times more likely to watch superficial videos about a new tank than important but unexciting topics
I would posit that it's not so much the question whether people are willing to read - but the topic itself. Whether you write a chapter in the user's manual or you make a really good video about, say, the command line options or how pathfinding works in Steel Beasts, it is evident that the important stuff gets skipped by many as long as it doesn't promise entertainment value. People read, or watch the important things only if they have to. It's part of human nature, I guess.
Fortunately our Youtube channel doesn't depend on high viewer numbers. We'll keep building up a library of useful reference videos rather than chase high view numbers. The goal isn't popularity, but a useful go-to place if you need how-to instructions.