It's a narrative that's warranted. Have people quickly forgotten that we spent the #13 and #22 pick in 2016, just to cut them 1 1/2 years later? What message does this send out to agents? Draft prospects? It's just not a good outlook. Before that, we had no problem shipping out T-Rob half way through, and Stauskas after 1 year. If you're drafted in the 1st round, you shouldn't have to worry about stability. Most young players stay on the same team until their rookie contract expires.
This turns out to be not true.
I looked back at five drafts: 2009-2013, chosen to be the most recent five drafts which are at least four years out, so everybody in those drafts has had an opportunity to play through their rookie contract. I looked at players drafted between 11-30, because obviously top-10 picks are more likely to stay in one place, and you are talking about players at #13 and #22, which fits nicely in that range. That gave me 100 players to look at.
Of those 100 players, 1 has not set foot on an NBA court (Livio Jean-Charles) so let's forget about him. Of the other 99 players, 65 - that's almost two-thirds - did NOT play a full four years for the team that drafted them. Technically, if I wanted a true two-thirds I could have included Festus Ezeli, but he actually was under contract for his fourth year and did not play due to injury, so I did not count him.