Agree.
See how the Kawhi trade looks in 3-4 years.
Kawhi may be a salary cap albatross by then. (If the Spurs were right, he has a chronic degenerative condition.)
Kawhi may not wear well with his new team (i.e., other than Toronto) on a five year deal. He won't have the good will of a championship to fall back on and he'll still be demanding at least 20 games off per season (maybe more later on). He won't be an "asset" in the PR world or the local community either.
Meanwhile, the Spurs may get more than we think out of DDR (or possibly a good player if he's traded). Plus, Poeltl may work out and even the 29th pick may surprise.
Everyone talked about how pathetic Detroit was when they had to sign and trade Grant Hill (another chronic injury risk) to Orlando for only a no-talent trade-filler named Ben Wallace. Detroit won the LOB with Wallace and Orlando has never won anything.
Fans and the media are always fighting (and analyzing) the last war rather than looking ahead.