I couldn't disagree more tbh.
For example, my life is quite busy lately, so I don't really get a whole hour free to watch a video, so when I click on it and see 40+ minutes, I'm put off straight away.
But, if there had been 4 episodes, each 10 minutes long, I'd think "yeah cool, I'll watch one now, learn something, then watch another later".
And I'm sure SO many people will feel the same way as me. And I think it's part of the reason K&M are such great content creators, they get this concept