There is a difference between "don't care" and "can live with".Why did the creator choose to make a whore sucubo? It's not currently because she's trapped in the house but because he wants her to have that past?
Well, most men I would say that 98% don't care about a girl's past, so I understand from that market vantage point that it wasn't necessary to do it
"don't care": everything else the same, there is still no preference over one with a "clean" past.
"can live with": well maybe I perfer a clean past. But people are never perfect and most of the time I could only like at most 90% of someone. So since everything else is so nice, I might just overlook this imperfection. Maybe the past is not the most important thing in life, is it?