The depth of the characters and the story all sound great if you explain it in detail after the fact. The problem is that it was mostly executed in the movie poorly. For example, your explanation of the space cows milking scene. Fine, that makes sense explained after the fact, but it was a really poor way to show that discomfort in a movie. A lot of the main story arcs just fell flat because of poor execution (Leia Poppins, Rey's training, everything Snoke, light speed kamikaze maneuver, everything Finn and Poe were involved in, etc). There were definitely some great scenes, but overall it felt more like I had to convince myself and look up talking points as to why it was a good movie vs. just watching it and believing it was from the start.
Sounds like you're just bad at watching movies.
Nah, I just relate more to Mark Hamill's view of who Luke is and what the movies should be rather than the views of Rian Johnson and JJ Abrams. If you prefer where Rian Johnson and JJ Abrams are taking the universe, more power to you. Always better to truly enjoy something than not to.
Relating to someone's view has nothing to do with how well the scenes are executed. You said the story fell flat because scenes were poorly executed. Mark Hamill, despite not initially agreeing with where Rian was taking Luke, wouldn't say it had poor execution.
If you don't like TLJ because it ruined your childhood, whatever, just say that. Don't come up with some nonsense about characters having no depth and the story being poorly executed. 96% of the top critics on RT and 95% of critics on metacritic have a favorable view of this movie. Critics generally don't like poorly executed movies with depthless characters.
The irony is that you said you liked "Rebel One" (still not sure if you're getting the joke), a movie where the characters actually had no depth.