One more time, which will again fall on deaf ears. Casas was stinking up the joint before his injury. His overall WAR was -0.8. So almost anyone, including Sogard, whose WAR is 0.0, would be better.
You've left out a key point about Raffy. He wasn't great at it, but he loved playing 3b and had done so with the Sox for 8 straight seasons. Good for Breslow to bring in Bregman, but Devers hated losing his slot, and it took a lot of convincing by Cora to get him to embrace the DH. By the time Bregman was hurt (May 23), Raffy's OPS was higher than Bregman's and so were his rbi's. He was freaking perfect as the DH, just as Ortiz and JDM had been--and Big Papi played on 3 WS teams and JDM on the 4th. It is not a criminal offense to have a great DH, but it can be stupid to continue to use a lousy one.
Breslow has never managed anyone in his life. He is definitely smart, but he doesn't know jack about managing or handling people. And that's OK because he doesn't have to be good at that, but he does need to trust his manager, which he clearly did not do when he went directly to Raffy to ask him to play 1b. Then he made it worse by going public with Raffy's refusal.
And this. The pitching has been the biggest problem with this team all season long. Team ERA is ranked 17th in MLB. Runs scored by the Sox lineup are ranked 7th and have there for almost the entire season.