i only disagree somewhat on point 1! everything else i agree with you!
and the somewhat depends if you speak the truth to Maya or not about going to meet a girl you left without clearing things out!
also Ofc josy refuses a DIK player, you forget who her brother is? Tommy the original DIK, she probably heard him talk to Peter about heather and how he treats her and how their relationship works, so of course she is scared of a DIK MC!
but the MC can not be held accountable for the actions of others, if you choose to be with Josy it´s the MC`s choice Josy is the one in a relationship so its her responsibility if she engages with people outside the relationship! that she uses the MC is only a reciprocal situation an therefore where the person being "used" is acceptable since they both use each other, the reasons for it are to each their own!
as for your original question i already answered, they both used him not for his own benefit but as a tool and a safe fail plan and lead him on! they should have been honest and at least admited their relationship was on the rocks and they where caring for him and perhaps if things did not turn out alright they could have a relationship! thats what Josy did... Maya did not!
Maya´s incentives are twofolded 1st a back up plan for Josy fail relationship so she does not end up alone! 2nd a way to reconcile with her father by a finding jesus moment were she is no longer a lesbian because she found someone with a dick she does not hate...
strong incentives indeed but still she deny´s the MC`s humanity and right to choose of his own free will if he wishes to be the back up plan! because guess what, most players would jump at that... and probably that moment is present when the MC can choose if he wishes to help Maya with the scavenger hunt, except she never gave him the chance because she is unable to trust and projects that lack of trust on to the MC!