no. the wrong calcus is to act as if picking in the 2nd round was the best option to fill a position of need.
including #2 and #14 the Spurs currently have 12 players under contract. this might change because of some moves, but this is where they are right now. and obviously they didn't think it was the best strategy to fill remaining roster spots with some 2nd round picks. I assume they did their calcus of their own and that's the result. it is totally irrelevant, if we think a player like Raynaud is good enough for this roster, if they don't see it that way.
they will put some FAs into this open roster slots and yes, I think that's a better strategy than to roll the dice on Raynaud or Kalkbrenner, who may, or may not, be good enough to play in the NBA.