I still hold out that Rey and Ben should have switched sides in that movie (at least temporarily), because it really would have let us explore some cool ideas that hadn’t been done before.
But I do agree that the “letting go of the past” thing was a really great theme to have as the core of the movie, because it shows that Luke was falling right into the same mindset that the Jedi order had and was their downfall. But this time, he didn’t let the “old ways” become his downfall.