My guess is that this guidance was given to a specific writer or person in charge of a specific genre.
Not all movies are high art, nor should they be. It’s for a certain audience. We’ve had crappy made-for-TV movies since long before streaming and it hasn’t been the death of cinema.
In fact that's actually what my main complaint is about this article - the point it's making is a good one but the article is probably 5x longer than it needs to be.