In an odd bit of coincidence, just saw this article posted today:
http://birthmoviesdeath.com/2017/04/25/for-the-last-time-rey-is-not-a-mary-sueHaven’t read it yet but with a headline like that, must be good.
That article isn’t very convincing, as it tries to make a false equivalence with Luke’s much less one man journey in ANH.