Nah man sorry but his logic is just messed up. I mean, they are not even doing it out of their own volition, compared to the maids (as far as it has been explained that's the maids wish). They are being actually gang raped. And if you actually think about it, that means maids are potentially the result of those rapes.
Bro, i think this is the first manga to make me feel torn. Like, if you wanna make the statement that they are raping some wrongdoers or whatever as punishment, but is not the case, the perspective given to us is quite "villainous" instead. Like raw, unfiltered, villainy.