Personally my take is that anything sexual the MC can do is something he is entitled to do. Lacey hard cheated on him, betrayed him, and what justice did he get? None, retribution? None, compensation? None. The free pass was something already bestowed upon the MC by Lacey before she hard cheated on him, only sometime later she decided what he needed in addition to a pass to fuck anyone for a week, was for her to cheat on him to prove sex with others doesn't matter.
So those handjobs and blowjobs you can get from the other girls? He earned the right for those, Lacey never gave him back anything for her hard cheating on him, sure she might have pushed him to date around some other girls, but do dating equate to cheating, betrayal & humiliation? Not remotely.
I'd argue its one of the things that has fucked the MC, the fact that after everything Lacey keep doing he never get anything back, oh he get to fuck is wife, how magnanimous, he get some kinky sex, that is wife seem more enthusiastic about then him, he got nothing for his own benefit out of it, pretty much, just her own benefit.
Look at Vegas, he spent 8k on the girl's day and what did he get? Oh he got to visit the same spa for a massage, he got to visit the gay bar again to talk to the guy he had the day before, he visited a Dominatrix, he does nothing at the spa or Dominatrix because first I consider the Dev on this to have been lazy, after wasting 8k the previous day and being treated like trash him getting to actually fucking those women would have been the minimum he is entitled to.
But that is the problem really, from the start of the game he has been told he isn't entitled to his pain, to his anger, to his grief, Lacey is always justified, some of the girls around him have in many cases taken to justify her too, so now he think he is a bad man, because he has been told he isn't entitled to his feelings, not entitled to any rewards, any compensations, any justice or retribution. He is expected to live and let live, so its breaking his mind.
Reality is it would have been far healthier for his mental health for him to have sex with various women / girls, the meagre sexual activities that he does under our control enable him to release a minute amount of mental steam. If he had been allowed to experience relief, to experience giving Lacey some of those feelings she has forced him to endure over and over, it would have done him a whole lot of good, instead he is expected to be a cuck, to do nothing sexual with anyone but Lacey and marginally Anna, all the while Lacey keep having anything from intimate actions to sexual activities with other men.
And after it happen they keep telling him its fine because she was drugged, not in her right mind, because she was trying to teach him something, she refused to take the blame and several others have taken to support her in this pattern, so where do the blame go? To the MC, he isn't allowed to blame his wife, not really, and those guys aren't around for him to blame, so the blame ends up with him, and its destroying him.