Rey isn’t a Jedi yet.
Which begs the question what does Rey miss, that would prevent her from being called a Jedi? She has pretty much all the skills. She defeated Kylo Ren, resisted Snoke, and rejected Kylo Ren’s offer. What else is left for her to do, outside of defeating Kylo Ren again?
Being a Jedi is about more than just having all the skillz (which there’s no indication she has anyway). She defeated Kylo in a moment of weakness for him (and the next time she tried to face him she never even got to ignite her saber). She did not resist Snoke. And rejecting a single offer towards the dark side doesn’t mean that you’ll never face temptation again. Luke rejected Vader’s offer in ESB, don’t forget.
Sure, but let’s also not forget, that Luke did not have the level of control Rey has at the end of TESB. Luke still struggled to lift a few rocks, and got handed his *** by Vader. Rey came out victorious by comparison, and even got to rescue the rebels in the end.
To expand on this, while being a Jedi is obviously more than having Force powers, up till the ST the two were intimately linked. Mastering these skills was the hallmark of a Jedi. Why? Because these skills were only attainable through a level of seriousness, commitment, detachment, and control that comes with being a Jedi. As such, being able to go toe to toe with experienced Force users implied being anything but a novice. The ST now effectively tries to sell the idea, that Rey whilst having all these amazing skills, which were up to the ST typical of a fully trained Jedi, and not seeming inferior to Ben Solo (who she already defeated once in an unfair fight, but still) in their fight against Snoke’s elite guard, is still a novice. It’s trying to sell the idea, that someone who consistently hits the bulls eye is not a good darts player, because there’s more to being a darts player than hitting the bullseye. Yet, history tells us, that being able to hit the bullseye is the hallmark of a good darts player, and Rey has an impressive record when it comes to hitting bullseyes.