Do you mean Trey Burke or do you mean Dante Exum? The Jazz merely established that they don't do well with high-picks in the 2011 draft, DL made it a tradition. If anything, Kanter might be the best of those three picks. The biggest mistakes the Jazz made with Kanter are how he was mercilessly and pointlessly buried to begin his career, and then the trade where the Jazz went out of their way to dodge taking Reggie Jackson to instead take a bunch of junk assets.
For the record, almost nobody had problems with any of those picks at the time, myself included.
Kanter was drafted in 2011 and KOC was still running the show.
DL started to take over in 2013. They drafted Burke (DL let it be known he was Corbin's pick, wasn't a fan of the way he threw him out there like that). Then they got Gobert
2014 is when the combo of DL and Snyder was running the show.
2014: Exum, Hood
2015: Lyles
Granted that it is still to soon to tell if the Exum pick was good or not. But I have more faith now than I did before.