No it doesn't. The force and Jedi aren't scientific things. Its magic. Comparing one Jedi to another is pointless because there is no set scientific baseline. Just because Luke had to do one thing to achieve something doesn't mean another Jedi has to follow his same regiment or take the same amount of time to train or that that they will pick up abilities like video game perks in a predetermined order over time.
Rey already has some melee skills. This is established in TFA. Her abilities with the Force enhance those skills. She gets stronger in the Force in this film so her abilities get better. Seems pretty logical to me. I dont need the film to waste time establishing whats already established or showing me arbitrary scenes of her sparing. Why can't people just accept that she already had some fighting ability and that the Force, a magical thing that turns beings into supernatural warrior wizards, enhances and improves her abilities? People seem to accept it just fine when a superhero is capable in a fight and has powers without extensive on screen training scenes. It should be just as easy to accept that Rey had some fighting abilities and her superpowers enhance those abilities.
Each universe on film establishes it's own set of rules, what applies to one doesn't apply to another. Star Wars rules has established that in order to properly use the Force one has to be trained in some way. You're essentially saying 'just go with it' when it contradicts what's been established over the course of 6 films.