He hears a lot of bitching, but nobody has any idea on how to end the series better than what he did.
Article.
Sorry JJ. I love your work, but you are wrong here. See, the problem is that it's a trick question. Nobody can actually write a good ending for Lost because while the series was entertaining, you put in way, way, way too much stuff that couldn't be explained without a shitty ending.
Spoiler for the end of Lost below
Oh, and I wouldn't have said "Nope, it's not limbo or purgatory, and everything will be based on scientific fact" during season one when someone guessed correctly how Lost would end...