I think in a season where mgmt seemed to make all the right moves, their kid gloves approach to the starters has taken a toll on the bullpen which is why we find ourselves "unlucky" with bullpen injuries right now.
As for Miz being soft and needing to pitch with a lead, im not buying it. This kid was put in many high pressure situations and handled it well. The staff tried to find ways to cut innings to prep him for postseason so the IL stint was convenient. When he came back, he hasnt found his dominance but also didnt pitch long enough to find his groove. I would attribute much of today to not just the lead, but rather, to the time he was given to find his groove. Expecting to see more of this going forward and the Brewers lengthening his starts again in prep for postseason play.