That's not the death of authenticity. That's oversaturation. That's a lot of people cynically turning marketing from something useful and benevolent into a wasteful game.

Organic growth is the real goal of advertising. When you make an ad, what you should be doing is figuring out what people need and telling them how your thing will help them. You get a customer, they find a service. Win-win. Advertisers do more than that, and they profit in the short- and middle-term, but that sort of thing is doomed to fail as people grow wiser.