Moneyball is a great strategy for sports that have a league format without playoffs. Over a 38-game season in the Premier League, numbers will even themselves out. If you have quality players, they will create quality chances and eventually score them. Your players can't keep missing forever and the opposing goalies can't keep having the game of their life against you.
The NBA does have playoffs though, so it's really stupid to think that the numbers will simply work themselves out. Just ask Mike D'Antoni. His teams have won 60+ games 3 times and 50+ games 7 times. He hasn't even got a Finals appearance to show for it. If the NBA operated on the league system, he'd be one of the best coaches of this century. It doesn't though, and you don't get to choose which game your team is going to miss 20 threes in a row. When they do, all you can do is sit there and watch it all unravel because you have no way of making an adjustment.
It's not even that D'Antoni or Quin are unwilling to make them. That's the sad part. We were all yelling at the screen against the Clippers, but at that point, there was nothing anyone could've done. You can't throw defensive schemes that you've never really used before in a win-or-go-home game. You can't suddenly invent players who can defend on the perimeter when you and the front office have spent the past 5 years purposely avoiding signing, developing, and playing players like that.
There has to be a plan B for the playoffs. We all saw last season how over 72 games, numbers do work themselves out. They don't do it over a 48-minute period where you let Terance Mann score 39 on you. He might never score 39 in an entire playoff series again, but what good does that do to us now?