Here is the conundrum: Horny has no job security right now. He is the head coach of a team that overhauled their front office and management in the off-season, and he was was the outgoing regime's hire. There are no guarantees that he will be back next year. In fact, odds are that Mills and Perry will want to hire their own coach to lead their rebuilding efforts and youth development.
So you have Horny, who knows there's a good chance he won't be back, and whose team is riding a long losing streak following the horrific injury to his franchise player losing him for the season, so he's compelled to continue to play all his veterans--who he believes gives him the best chance of winning-- in an attempt to amass as many wins as possible, in order to possibly save his job in the off-season (even though it's to the direct detriment of the long term success of the team in a) playing the youth and developing them (and evaluating them) and b) losing games--i.e. tanking-- helps the franchise get a much higher lottery selection in the draft this summer (and possibly another franchise type player).
We get mad at Horny, but he is not to blame. He is a coach and all he cares about is getting wins and maintaining his job security--especially if he doesn't have the endorsement from the new front office, which it appears he doesn't.
What needs to happen following the all-star break is for Perry and Mills to have a sit down with Jeff and let him know that he's no longer being evaluated on wins and losses for the rest of the season, but is being evaluated on how much he gets out of developing the young players on the roster in expanded roles. This edict has to come directly from the FO, in order for there to be a significant change in the coaches philosophy. They have to be on the same page as far as what they're trying to accomplish for the rest of the season.
I have a feeling this convo has not been had yet, since we're still seeing what we saw last night with Jack coming back in the game with 7 minutes to go and all the vet starters playing heavy minutes (and we're still losing).
I hope for the organization's sake it happens soon.