Considering you can't get Cathy either on a M&J path I think it's an intentional opt out.
The thing is you can act the exact same towards M&J and they reject you based on things they can't possibly know. They can't know if you got Quinn's number and payed for sex, smoked in the rooftop... And they still reject you based on those things.
That's the problem, not everyone has to share your playstyle. And consdiering how many people here complain about not being able to get the Jill scene because they have CHICK status but DIK affinity it seems that a lot of people doesn't
. But the game has to make sense for any playstyle. I'm all for decisions that matter, but in a way that makes sense. A DIK MC blocked from the M&J path? Absolutely. You can block the decision of being more than friends out so a DIK MC can't choose it, or have a DIK MC do something that M&J know and don't like, so they reject you... Anything. Right now as it's written it doesn't make any sense.