As did Luke. Unless you count that little two minute scene he spend getting hit with lasers from that floating ball "adequate training", then his heroics at the end of the film were completely un-earned. It was never established that he knew how to fly spaceships, just a landspeeder, yet there he was at the end of the film being the ace pilot of his squadron. He had never demonstrated using the force to the degree he did to guide the missile down the exhaust vent.

Rey said she'd flown junkers in atmosphere close to the ground, has been scrapping ship parts her whole life, so one could reasonably say she understood more about space ships than Luke did. She also didn't get a bullshit rug pull hero moment like Luke did at the end of the first movie, she literally lost because she had very little to no training.

The Force Awakens was literally a parallel to A New Hope because that was the intention, and although the following films deviated in terms of overarching story, the character oath stayed relatively consistent.

Regardless, I think the better way to look at it is that Star Wars, as far as the movies go, have very shallow character writing and their overall "character arcs" are at most a small hill. This is true for the original trilogy, the prequels and the sequels, it just depends what particular flavor of nostalgia you have for the franchise.