> What in the world do those posters of pornography know that I don't?

The power of persistence. I'm not being glib: these people probably get most of their ads/accounts blocked or banned, and have a dismal success rate baked into their business model, but they keep submitting until one goes through.

Misrepresentation is another key ingredient, but I hope you're not willing to buy a network of bot or havked accounts just so you can get an ad approved.