Genius concept ruined by the love story

Rating: 6/10 (10 July 2019)

Let me just preamble this by saying that I had been so excited to watch this movie. I love The Beatles and the concept of this movie sounded so interesting but unfortunately, it let me down in so many ways that I've had to put it in writing AND bullet points.
1) Main character gives up playing Beatles songs even though he is depriving the world of life-altering music to be with Ellie - the woman who is introduced as his manager/potential love interest who wants him to succeed as a musician, sees his potential and is smitten with him... Until he is too successful.
Ellie goes on to make him choose between his immense success and being with her. Why would you want to be with a woman who supports your success as a MANAGER in the beginning who then goes around to making you choose between her and being the most successful musician ever. Why couldn't Jack have both? Why make him turn his back on everything he has aspired to since childhood? Ellie, why are you like this?
Jack spends a portion of the movie fearing being exposed, and when he is confronted by two people who also remember The Beatles, they thank him for keeping the music alive. He is effectively making sure that these wonderful songs are not forgotten, which is a nice sentiment that makes him feel less guilty about claiming these songs as his own - a sentiment with a lifespan of about 15 minutes that goes out the window when Jack chooses Ellie over being a musician. No "Imagine", no "All Things Must Pass", no "Maybe I'm Amazed". Ellie is being selfish for asking him of this, and he is being selfish for agreeing to it.
3) Depriving the world of Harry Potter to be with Ellie
At the end of the movie, it is revealed that the Harry Potter books do not exist in this universe either, and when Ellie asks Jack who that is (or something to that effect) he says: "never mind". Yes, I am biased because I love Harry Potter, and a world without these books seem incomprehensible.
Considering that he gave up probably the most successful musical career ever to be with her, it is implied that he is also giving up writing Harry Potter to be with her. This man is a teacher, and is basically depriving children and adults from one of the greatest fictional works in modern times, a series of books that have been proven to make children more empathetic.
4) There was no reason for Jack to say that he did not write this music, because in this universe, neither did John, Paul Ringo or George and therefore, no plagiarism. This music would not exist in this alternative universe without someone like Jack bringing it to life.
I also have some thoughts on how the movie portrayed John Lennon's alternate life of not being in The Beatles which I do not agree with, but it is such a small portion of the movie that I will let it be.
Negative: The development of the love story / Ellie
Positive: Beatles music, the idea itself of the movie