That's not in the Dom route. That's where most all actions still happen either with the permission of someone from Z4 or under their care and supervision. So if we imagine for a moment that Steam/Patreon's double standards have disappeared, what about sub Kane, playing as whom
the player doesn't have the option to refuse to have one imposed on them?
Or are NPC more important to you than the feelings of a real player? Sure, there's a certain amount of sarcasm and humor in all of this, but think about it. The Dom path is not and never has been an abuser path, which cannot be said about the Sub path, where the victim is not "NPC dummies", but the player directly.
In good conscience, it would be fair to give the choice not only to Dom players, who already have it, but also to subs (even if some of those guys don't want it

).