1) Just because you're in a gallery doesn't mean you're good. The SA girls are probably all featured in some slummy inner-city smut factory that likes to call itself a gallery. It's nothing to be proud of unless you are hosted at a reputable place. Be butthurt all you like, but unless you're in the Louvre or MOMA I honestly don't care you've got your shit on a wall somewhere.
2) I'm not putting any words in anyone's mouth. You conjured the names of those painters as a defense of repetition. Giotto was not a secular artist, like you. He was GOING to get stuck painting frescos of holy subjects. Botticelli's repetition was found in his technique. There is no ''artistic technique'' in smut photography save a few skills you earn airbrushing your model's imperfections and scouting. It's sort of like what a carpenter or housepainter does. You make a product for consumption, not art for enjoyment (unless of course you think your high-class clientele is anything other than a bunch of mouth-breathers rubbing one out into their shorts.)
3) There's nothing self centered about an honest expression of someone's opinion. If you can't take criticism, albeit as harsh as mine, then you're a pussy.