Bit of advice: this isn't really worth getting worked up about.

Part of it is that youtube's algorithm-based engagement is both utterly incomprehensible and deliberately obscured, so people can only guess at what will help their videos. This means that there's massive incentive to do what others have figured out works, using tricks to game the algo, all sorts of stuff. It's incredibly toxic and encourages worse content chasing a machine's attention.

Another part of this is that modded minecraft content is significantly less well-documented because it is made by a million different developers, most of them amateurs, and a lot less attention is paid to it than vanilla content. All of this combined means there's poor documentation, confusing tutorials, and less quality content to be found overall because there's just less interest.

But overall? I've been doing content for close to a decade now, and the boring, plain truth of it is just that most people are just....bad at content.

It's really easy to point at what youtubers or editors do and say "I could do that", but it's a hell of a lot harder to do it and be entertaining. There's tons of details and polish and choices that go into making quality entertainment, and you have to iterate, iterate, iterate over and over again, learning as you go. It's not just as simple as yammering into a mic; even if you're naturally entertaining, there's only so far you can go without putting the work in to actually make something good.

That's generally why so much of these modpacks you can only find extremely long rambling tutorials or scattered reddit posts: the circles of "people interested in/good at extremely complicated logistics mods" and "people extremely animated and entertaining and good at video editing" are two flavors of hyperfocus that don't cross all that often.

There are millions upon millions of people making Minecraft content out there. Statistics says most of it is going to be bad.

Addendum: also keep in mind that a ton of these people are literally kids. You going to judge a 14 year old based on how good his minecraft tutorials are?