"Content creator" is like calling a good cook "grub producer". I don't understand why youtubers themselves keep using it. Content is the emptiest word (and we shouldn't use it like that IMO).
Probably because they see all the data behind the scenes and know how the sausage is made with respect to what brings in $$. Capturing the attention of humans is just a psychological manipulation exercise. We're mice being given dopamine injections on a regular schedule