The problem is that the first part of this new story strongly hints, that Rey’s parentage actually matters and then suddenly this other guy takes over the story and just goes “yeah, we’re not doing any of that”.
I strongly disagree. JJ’s statements about the force show he had the same reveal in mind. Rey’s parents only matter in terms of it matters to Rey. No one in TFA says her parents are important besides her, in fact if anything they say the opposite.