Law of shitty click through rates. https://www.google.com/amp/s/andrewchen.com/the-law-of-shitt...

The best marketing comes from strong value props in an area people are open to hearing them. The magic of Facebook (and Google although now less so) is the ads are extremely relevant, to people who are open to hearing them.

The backlash against ads is because they work, when done properly.