You only notice how insidious and shit ads are once you properly experience what life is like without them. As someone who browses internet only with uBlock Origin, obtains media only through ethical means (piracy), I cannot stand ads at all. Then one day I am forced to experience ads. Like maybe I am visiting someone who is watching cable TV. And I cannot comprehend how someone just does not go berserk seeing ads.
My father was watching YouTube on a smart tv and there was a whole one and half hour movie as an ad. It was skippable but who puts an entire movie up as an ad? And why? They also put up kpop boy band music videos as ads. For my late-middle-aged Hindu fascist father, a fact that YouTube knows owing to the browsing history. I don't understand advertising at all.