On that point, I do somewhat agree. I have said previously (many times) that a better resolution might have been for the revelation of their "infidelities" with the MC to make them question their relationship, to make them wonder, "what do we do now?" I feel they could still not be mad at each other because they both understand why they would do such things with the MC since they both feel very similarly about him, but it should have made them uncertain about what it means for their relationship, not to immediately lock lips and act like everything was fine.
Then when it comes down to the decision of the MC, trying for something more on the Neutral/CHICK path would result in them agreeing to it, but on the basis of their feelings for the MC and thus not making it feel like they did it out of pity, and the friendship choice would have all of them agree to just be friends for now, including M&J, because they need time to reassess their relationship.
That, in my view, would have felt more satisfactory.
Josy and her Dad talk before the choice between M&J, so you get to see that part if you're still with both of them.
However, the choice between M&J is a fairly big one in the sense that you do get some rather vital character development with each of them and it's a big part of the reason why I don't like that choice. I feel like it was necessary for each of them to have a heart-to-heart with him after ep 4, even if some players prefer one over the other, because the MC needed to hear what they both had to say and these conversations should haven't be locked behind a specific choice.