Banned? NO Gross? NO I want to like what I like. So I strive to not judge what others like. If you don't like it...leave it and push on...how would you feel to have your likes and desires frowned & be told how messed up you are? If you like it, enjoy.. if not shut your mouth & move on.
As long as there's no issues with consent, gay sibling incest should not only be considered wholly uncontroversial - but rather, an utterly wonderful expression of love and lust! And if two lads can make a nice bit of money on the side by sharing their affection with a curious audience all over the world, well, then that's just living the dream!