What if Pruitt gets some minutes in the future and proves to be a bust? What's next? Doc left bench players for too long? How many minutes have the starters played? We're one of the teams in the entire league where the bench players see less minutes, especially if you discount what they get in garbage time.
Fans love to moan about the coaches micro-management. 95% of the work of the coach is done before the tip off, but, for some odd reason, fans believe those 5% - that, btw, are much harder to assess - is what matters and impacts the winning record.
Maybe you should consider that this bench is being maximized as of now. They just aren't better than this.