I think it's not really a secret that you have to be really a fan to get this. Because most of the movie is other people (mostly private persons) talking about what Bruce means to them, how they cherish him and how they show it to others. Little anecdotes of course come up all the time and some people are even featured a couple of times throughout the movie and most do the describe in 3 words "game".
All that gets "interrupted" by performances by Bruce from time to time. This is kind of refreshing and you get to hear what you love too. But this isn't a concert nor is it about Bruce in a sense. But about the impact he had and still has of course on many people. Not every-ones cup of tea, but with a title like that, it should be clear, if this is something you want to spend time on or not
All that gets "interrupted" by performances by Bruce from time to time. This is kind of refreshing and you get to hear what you love too. But this isn't a concert nor is it about Bruce in a sense. But about the impact he had and still has of course on many people. Not every-ones cup of tea, but with a title like that, it should be clear, if this is something you want to spend time on or not