I land in the middle on Story.  I agree with Turner that Story is much better, because stats don't tell the whole...well, story.  Nobody gets a gold star for a killer run-saving play, and Story is right up there with Arenado and DJ on these.  

For me, the concern is that these errors seem to be more concentrated recently.  I'm not fully positive on the timing, but I remember wondering a week or so ago if his plate issues weren't impacting his fielding.  The errors seem to be mostly June or beyond.