You mean his predictability of attempting to be completely unpredictable. I would imagine that the critics would shut up if he were completely successful in that regard. Guess he isn't, then?
I guess you're right. So pray tell, how is LOST going to end?
I can't recall a single critic nor entertainment analyst nor Abrams fan who has been able to consistently project the most cryptic plot points in his works. I've come to admire him for his capacity to tell tales which engross viewers. I'd argue rather that critics become frustrated about the predictability of being unpredictable... much akin to their
initial dislike of M. Night Shyamalan. I'm not making a comparison between the two, but if you go into a work expecting plot twists though surprisingly in turn garner no immediate reward thereafter, you will likely end up frustrated and jilted. If, however, you can delay that knowing the wait will be rewarded within the context of the larger narrative via the LOTR tales which spanned three years in cinemas, then one will eventually be sated.
The reason I bring up M. Night is because many critics have defamed Unbreakable, one of my all-time favorite films. They deemed the ending predictable, expecting a twist at the end. Even many ciritics who weren't spoiled by the leaked ending on the internet fell into the line of thought that, "we should expect
this type of Houdini act from
this creator". If it were done by a relatively unknown writer/director with no other major works under his belt, it may well have been greatly lauded, as it has in cult followings or with those who were not so myopic with their critiques.
The point being that when you sit down to watch a television program or walk into a movie theater, it's best to lay expectations and biases aside for the sake of the larger story, rather than immure oneself in likelihoods.