IGS, in general though I don't agree with many of your posts (due in part to your Fes-centric love), I keep my mouth shut because, hey, it's your opinion. But this post of yours - to me - doesn't quite hit it squarely.
Well, it's good that you respect others' opinion, but you make the common error of it being "Fes-centric love". More accurate would be "defense-centric love" and "effective-lineup-centric-love" and "coaches-enforcing-what-they-preach"-centric love.
I think players have to be given the chance to play through a rough patch. I think the action of being yanked after one singular albeit bad play will have some bad repercussions later. Physically it can cool them off a lot which, obviously, is bad. Psychologically it takes the routine/consistency out of their games. IMHO, they should stay in unless they are really, really dogging it out there. A missed rebound here or there is fine (i.e., let them play through it), but I will admit that continued and errant play would surely merit being yanked. An example of this would be (just an example, people...) CJ throwing up three 30-footers in a row. Or Fes picking up 2 fouls within a 90 second span. Things like that.
OK, and therein lies the inconsistency. Most of the time, players get yanked after two fouls (even when they probably won't be needed for 30 MPG) which is sometimes due to playing
too aggressively, not too lackadaisically. (Although the ideal is somewhere in the middle, aggressive defense, including fouls, has seemed to help the Jazz more than the passive, low-foul approach.)
But let's take your argument and give players two plays of dogging it instead of the first play (which is still one play longer than it should be IMHO, but we'll roll at for now). At that point, that player has potentially given up 4 points or more, and as we've seen repeatedly this season, lackadaisacal play can be contagious just like team and effort play is.
The problem with this season (and previous ones) is that the free pass of ineffective play has gone WAY beyond a play or two. In multiple games, Al Jefferson has been left in the game after repeated lapses in defense that has nothing to do with learning the system and everything to do with lazy playing. Sloan should be the very first coach to bench a player for that lack of focus. Fortunately it appears that he is starting to do better, and I'm OK with the two-lapses-and-you're out policy. But letting an unfocused player play a good part of a quarter or even a half without any repercussions hurts the team.
In the post-game today of BYU vs. Utah, Jordan Wynn said that he was sat out because he was playing poorly, and he said that it motivated him to do better when he came back in. Sure enough, the team rolled off 14 points when they were defunct for three quarters. I'm not proposing that a player who is dogging it be benched for a full quarter; just until the next whistle at minimum. The few times that Jerry did do this, after the superior hustle and RESULTS of the second string was BLATLANTLY obvious, AJ also responded. If Sloan had used this philosophy, I think that Utah would've had 2 or 3 losses at most; pretty much every game was winnable if there was better focus on lineups with more effectiveness and effort.
Consistency in the rotations, according to coaches more intelligent than I, is more valuable than a player's fear of sporadically (and in their minds, arbitrarily) being yanked.
This is where I also heartily disagree. If players are "entitled" to a more or less fixed number of minutes no matter how well they (or the lineup) are doing is suboptimal. What's more, there would be much smoother flow in rotations if only one or two players were subbed every few minutes instead of 3 or 4 or even 5 players coming in at once, even after a quarter is over. I think that the first sub-out should be around the 6 minute mark in Q1, unless they are doing exceptionally well together, which has been the vast exception this year. Bringing in CJ (or Price or Elson or Fes, depending on whether the frontcourt or backcourt is in greater need of a change) at the 6-minute mark provides little disruption keeps a lineup substantially intact, with a majority of the players warmed up. By contrast, leaving a stagnant lineup in there for an entire quarter rarely results in an uptick in performance toward the last few minutes, especially in Q1 or Q2.