Just because he has his own harem don't not mean he's satisfied just with them. Any female that comes into the house will be a target. Saying in the future he won't rule out violence.If he was doing it out of the blue without the current history, sure, it'd be disturbing... But, considering what they've all done together before, at this point, him jerking off during lunch/dinner would barely disturb any of the females in there.
Like it or not, they're all his cum dumpsters by now.
As for "he only wants one thing from females", and this is new or wrong how exactly? That's how reproduction/sex works for males and females, like it or not, sex is about the only thing most normal men wants from women. When some say "companionship is important", what they really mean is "I can get fucked more often and easier that way", although, anyone in a couple long enough (outside of kinky couples into non standard stuff), knows that's not the case at all.
To sum it up, the dude's got his own harem of cumdumpster, at this point there's very little he could do that would be wrong in their eyes considering how low their moral compass has fallen.
As for rapist in the making, why in all that holy, would he need to force any women? He's already got more than he can handle in a day or a week, and it's likely more are to cum in the college too... I mean, why would he fucking need to force himself on anyone at this point?
If you're looking for a rapist in the making, you should look at Oscar, now that one, hell yeah... But Max? Nope. Perverted to hell and back sure, but he's no rapist.
As for Oscar, yes he will rape. Look at his attempt on Kate during the biology class. Telling he class mates to leave him and the strapped down Kate alone. My Kate cried out for help, and Oscar had to be stuck down. Yes, he already decided that rape is okay.
I also feeling that the creator wants that route, when Oscar tried to blackmail Kate for BJ's with a video he says he has. My Kate said no. Since then, that scene has played over 5 times. Kate keeps saying no, but like it's going to keep coming up until you do what the creator wants despite your no.