I agree with you on talking being faster than typing. Having said that, I feel that this is more of a reason for me (and, I assume, for the top commenter) to counterargue that it's the youtuber's job to distill the message down to its important parts. Speaking is definitely faster for him, but it requires a bigger compromise on my part - whatever amount of time he saved requires me to spend ~15 minutes for something that can be told in one.

Or to put it bluntly: if he can't take the time to streamline his message then I don't have the time to listen to all of it just in case it gets interesting at some point.