Guess what! Teams get comfortable is you let them! We let Utah get comfortable by giving them numerous open shots. They got confidence, and now they're hitting contested shots too. After the game, the excuse will be "They hit shots". Rinse and repeat.
That's why you don't just let guys like Joe Ingles walk into 5 straight open 3s off the pick n roll without adjusting coverage. That's why you work on defensive rotations and scramble drills.
I rarely bring up my playing experience because the generic response is "That's not the NBA", but that adds to my point here... In college, we worked hard on defensive rotations, scrambles, and different pick n roll schemes. If we didn't rotate correctly, or messed up a coverage, we got called out or taken out of the game. We were held accountable. Thing is, we did a better job of positioning ourselves and rotating defensively than the Portland Trail Blazers this year. That's ridiculous.
That's why I get so frustrated by these things... Portland's defensive fundamentals aren't up to par. Not even close. They defend better than we could because they have length, athleticism, quickness, size, etc. Obviously there's a HUGE difference there. I realize that. But in terms of the things that aren't affected by those intangibles, my college team did a better job defensively than the Portland Trail Blazers. That's not a flex at all, that's just how bad the Portland Trail Blazers' defensive fundamentals are.
It's fucking frustrating.