Movie posters have used salacious and sensational words and imagery for as long as they've existed. If anything, Netflix titles have been slowly working toward parity to that standard, as opposed to devolving to actual clickbait.
I see your point, but movie posters didn't live in your home and didn't have the power of mass personalization. An analogy might be junk food. Sure, it's advertised in all sorts of tempting ways in supermarkets, but imagine if your refrigerator suddenly gained the ability to show, prepare, and serve you customized/personalized junk food whenever you opened it.
I see your point, but I don't see a problem with Netflix content using sensationalism to drive clicks. In fact, it's probably one of the vanishingly few legitimate uses of that type of visual manipulation. They pull visually stimulating stills from the content itself, combined with text that gives you a quick indication of what's in store. I take issue with low effort or misleading titles, but it's a constrained medium in a commercial context. Not a lot of ways to vary the interface.
The article just seems like a silly take, to me.