Thee aren't. Generally speaking extending the game to more possessions is not in favor of the team who is ahead.Ya it's always advantageous to get into a free throw shooting competition when you have a head start like the blazers did.
Also, you just make certain to inbound to your best free throw shooter.
Then the jazz are trying for a 3 so not necessarily inbounding to their best free throw shooter.
Blazers have all the advantages by playing the foul game.
NBA players are better today at shooting and making 3's than ever before.
Btw I bet there are stats that back up fouling when up 3 being the better decision. I have no idea how to look that up though.
I see a better argument for it within 5 seconds and especially when the other team has no TOs, but the Blazers started doing it too early and gave themsleves a higher chance of losing.