I think what is being misunderstood is how these ground balls play out in MLB as compared to the minors. There have been a couple of comments to the effect of "who cares how he hits as long as he keeps getting hits." Well, that is exactly what will change in MLB, his average is unsustainable at this level with the type of contact he was making.
Fielding is a dismissed skilled by many, but the defensive ability of major leaguers is far superior than the minors. The best athletes rise to this level and they are the fastest and quickest, covering the most ground. It's not easy to get a hit on a ground ball in the majors unless it's absolutely scalded.
I got the MLB package this year to watch the minors. There are hits happening multiple times in a game, sometimes multiple times in an inning that would not be hits at the major league level. Crawford has a small sample above high-A and Reading is a hitters park that he has played in for a month and a half of the best hitting weather he could play in. Let's pump the brakes.
I remember reading Bobby Richardsons book as a young kid and I still remember how he described his struggles early in the majors. He had to learn to use the whole field because the balls he was used to hitting up the middle just got gobbled up by the SSs and 2Bs he was facing because of their range. It's a different game now, but what hasn't changed is that the best of the best are playing in the Show.