I don't think it's that fair. Not all masterpieces are absolutely flawless when you look at the elements one by one, and a few of the elements picked out by AN! are fairly subjective. Also, no one really cares that not every single character is perfectly fleshed out.I think that's fair. I also think it's fair to compare it to 2001 because that was clearly an inspiration for Nolan and in comparison to that it falls way short. Probably didn't help that I rewatched it the night before I went to see this either.
In the end, it's the overall feeling left by the film rather than the analysis of all the elements bit by bit that should determine whether or not you felt it was a masterpiece (which in itself is hugely subjective and only gains a real meaning when a large number of people feel the same way).