Earlier quoted context omitted.
Idk if apple can validate each and every apps before publishing to appstore, why can't google and facebook validate each and every ads?
Newspapers and magazines didn't sell ad space to obvious crooks back in the day. Scammers didn't have tv ads. Obviously there was somebody watching them. The trashy scams were reserved for the real scummy publishers: comic books.
https://en.wikipedia.org/wiki/Christian_Broadcasting_Network