You're underestimating the value of a guy who can play 7 positions at any given time. The first time the guy ever played first base in his life was at the major league level. There are maybe 3 or 4 guys in all of baseball who can do what he does throughout a full 162 game schedule. Stat guys will never get it, but his peers do. Trust me on this. He's as respected as anyone in that clubhouse.
Let's put it this way. Remember when all of the "stat people" were whining because Farrell was playing Jonny Gomes against righties in the playoffs on their way to a World Series Championship in 2013, despite the " stats" saying that he was wrong? Farrell's response was to the media was, "Good things seem to happen when he's in the line-up." You'll probably never understand because you've obviously never played the game at a high level, but Brock Holt is the type of player that "makes things happen" when he's in the line-up. Again, there's a reason why any team in baseball would love to have him on their roster, and yes, you want to get him in the line-up a few times a week to keep him fresh.