Remember the "(though not entirely)" part of that post you quoted, well, that's what I was talking about. I'm not as angry nor as in love with TFA as this guy is, so some of his invective goes too far for me.
I don't buy that stuff about A New Hope because I don't think that Hamill was a good enough actor to convey any of that subtextually, and since none of it is actual text, it falls flat as a driving force. I much more buy Rey's determination (plus whatever background will be later revealed) because Daisy Ridley is a good actor and can sell subtextual elements and emotions and shit.