I agree with you totally that the technique is overused, and works ONLY if the writer(s) in fact, know where they're going with it.
Don't get me wrong; I too, prefer the straight-forward approach to storytelling, but I don't mind some
non-linear stuff if it really does help tell the story better. And granted, as it's being overused these days, it doesn't often happen where it helps the story.
Just my .02 worth.