Bertans isn't getting many minutes because the team has options at forward. Are there minutes available? Yes, but not so many that he doesn't have to play well to earn them.
I agree about Gay, but between him, Cun small-ball and big-ball, there are players to fill the spots. As guys get back, that'll become even more apparent.
Their three-best players shoot a bunch of twos. They aren't going to shoot many more threes with Bertans in the lineup than not.
If Davis can't rebound, his height is meaningless. Shot-blocking wings don't have the same value as shot-blocking bigs, so if Bertans has to defend outside the paint, he won't be in position to block shots. He's mobile for a big, but not that mobile for a wing. So if the actual debate right now in the thread goes the way of the folks wanting Bertans to be a three and play on the perimeter, then he doesn't offer value, either to an archaic organization or a new-age one.
Can't blame Pop for this. He clearly loves him some stretch-fours. It's outright disingenuous to act like the Spurs are against shooting PFs. Davis has to do PF things to get the minutes though, not just shoot.