Yeah, I think it might be similar to a lot of things actually. Maybe painting is a good example. Like, the techniques of using a brush in different ways can't be that difficult to learn, but putting them to use to create something great is something else entirely.
You can imagine someone learning those brush techniques and becoming quite confident that they could, theoretically, paint a whole painting, without ever trying and learning the difference.
You see this arrogance everywhere and it's really annoying. The classic joke about it is the "..first assume a perfectly spherical frictionless horse.." one.
There is absolutely an air of arrogance when people approach seemingly simple things such as styling. And then they implement all sorts of atrocities.