Mitch Kupchak didn't draft Pau Gasol. Memphis traded their 27 y/o for two first rounders and Marc Gasol.
Pat Riley didn't draft LeBron James. Cleveland received a $16m TPE and five picks.
Mitch Kupchak didn't draft Dwight Howard. Orlando received Vucevic/Various prospects that landed them Tobias Harris immediately following this deal and three first round picks, along with a sizable TPE.
DeAndre Jordan is similar but he was the third wheel in LA behind Blake and CP3. Had it been one of those two it would be a totally different situation - identical to Portland.
These teams were forced to trade their franchise players that they drafted, but they ALL didn't let them go for nothing. They were smart and landed pieces for the future.
If San Antonio loses LMA in three years for nothing I'd agree with you.