There is no real "evidence" that shows these characters to be what M&J dislikers try to paint them out to be, there's just personal interpretation/views coupled with poor handling of the smaller details by DPC that perhaps hasn't served them well, but there is no truly hard, objective evidence that says they are terrible characters, that's merely opinion.
What
ename144 provided, however, was solid reasoning, with lines from the game itself, that show that the MC was not willing to let Josy go and that none of this had anything to do with Josy "manipulating" or "using" him, but you're too fixated on the sweater, which could be interpreted as a romantic gesture by the way, to see that
ename144 made a good point on this one issue. Rather than address it or even hold your hands up and say, "OK, fair enough", you're dismissing it out of hand in a way that seems like you just don't want to admit that they have a valid point.
Honestly, this whole notion that just because you personally don't like a character or characters means you shouldn't have to deal with them is absurd. You all seem to be forgetting that this is not a sandbox game, you don't have full autonomous control over the MC's actions and the MC is clearly not someone that is going to cut these people out of his life, so suck it up and deal with it.