How many other players on the roster does that describe? The difference is, Murray has a chance to become more than he is right now. The others don't. It's not coddling to put him on the floor - that's where he's going to learn. If the extent of Pop's teaching consists of benching players, he really does need to move on.
Are the Spurs in win now mode, or build for the future mode? I think the answer is clearnly "neither". If this is supposed to be win now mode, they are well and truly ed. If this is supposed to be build for the future mode, it may be even worse since their players of the future are mostly on the bench.