Squeamish little bitches are bothered by the payed sex when its literally part of the narrative. Middle aged dude given sage-like abilities wasting away in the red light district, helping around as he goes on with his fuckery. The sex is hilarious. It isn't one bit fappable so you can't really even call that baiting. Pervs might rate this low for getting their hopes up.
Then again, some people might not understand the redlight district is practically one of humanity's many cultural facets that the creative industry will inevitably touch upon. Heck, its even amazing how it focuses on the lighter side which exists in properly managed establishments. It, in a way, probably strives to lessen the stigma attached to such a lifestyle and livelihood. But that's too deep for me. I simply want to defend Imosuke's universe.