Oh I agree about that, there was some over-the-top “what girl?” moments in TFA (I count 3: 2 by Ren, 1 by Maz), but I would rather removing them in a TFA-Edit than removing the anti-twist of her legacy, which, in fact, means her legacy is the Force, not the Skywalker blood line. What I mean is that in every story of fight of light v darkness (good v evil and so on) every hero needs a nemesis, which is, by definition, his “anti”. What a better way to confront a no-one to the only heir of Skywalker the (“I THOUGHT he was a”) myth guy ? (THOUGHT = I might have been wrong about that… damned…)

PT: Anakin v his own inner fears of losing control/his beloved ones
OT: Luke v his very own father
ST: Rey v her faith in a myth

I agree it might not be handled that well in the movie, but it’s like the PT for me: the result on screen is not satisfying but the intentions are higly interesting (and I’m not going to rant against 2 entries that don’t even try that 😃).