There’s been a rise in the last couple years from independent, even out-of-school, amateurs “developers” - more like “gamedev content creators” really - and those channels just spam content for the most basic stuff that you could find over and over for the last 10 years. It’s nothing cutting edge, it’s just about taking the spot for things that do not (or not yet) have a video for. It’s usually a new feature for the engine or [this one game]'s mechanic.
Surely in most cases, you get a working example for something, like say, a lock-on camera for your controller character etc. That’s practical, functional stuff for anyone jumping into Unreal and willing to understand the ropes along the way. Those videos argue on readability and compactness: why bother making a 1hr long tutorial that covers concepts, features and conception when you can have a few bullet points and do a 5min application?
This never is a 3D lead supervisor of [famous AAA studio] talking about the new feature with an example at hand. That’s paid stuff that only a few actually manage to make time and good tutorial. And those people, I keep saying they’re not on Youtube (or very rarely, and besides things like GDC) because they do the actual stuff on the daily and are busy enough.