>"what exactly do you find disgusting."

Disgust isn't usually that easy to pin down with precision.

Do you find a soiled diaper disgusting? If so, "What exactly do you find disgusting?" Do you find a it disgusting if a person is plucking out their eyebrows and eating them? Probably, but what exactly about it is disgusting?

Many if not most people would struggle to pin it down "exactly". In the case of this particular affiliate site, I'd say the general incentive structure that leads to this entire category of business is disgusting but it's somewhat difficult to pin it on any one specific actor. The site builder may have the best of motives and simply be rationally exploiting an opportunity that would undoubtedly be done by someone else otherwise.