This is not really true in my experience. The vast majority of instructional videos and video essays are just repackaging a text resource, often just the list of references from Wikipedia. I think you’re just falling for the veneer of professionalism that makes YouTubers popular, but remember it doesn’t actually mean they know what they’re talking about any more than a random forum poster. There are of course exceptions, but the glut of instructional videos is just because they’re profitable, not because they’re actually full of unique knowledge.
This is not really true in my experience. The vast majority of instructional videos and video essays are just repackaging a text resource, often just the list of references from Wikipedia. I think you’re just falling for the veneer of professionalism that makes YouTubers popular, but remember it doesn’t actually mean they know what they’re talking about any more than a random forum poster. There are of course exceptions, but the glut of instructional videos is just because they’re profitable, not because they’re actually full of unique knowledge.