I never said or implied Breslow "threw a season." In fact, I've repeatedly praised him for insisting on a new pitching coach and bringing in Bailey. I think the Sale and Giolito deals were stupid, but agree with moonslav that last winter they almost made sense. Certainly his intent was to improve the rotation and not destroy it.
Once DD was fired in 2019, which was just 5 years ago, I think the Sox entered something akin to what Rod Serling called the Twilight Zone. Big bucks for big starters were out and overall the Sox payroll went from #1 in MLB in 2018 and 2019 to 11th this year. Chaim Bloom was hired, I think, to replicate the low cost success of the Rays, and that simply did not happen. Not even close. Instead, CB hired short term starters and was allowed to give Devers the big extension--but not Mookie-- and 5/6 year contracts to Story and then Yoshida.
moonslav has pointed out that this upcoming offseason is a great opportunity to fix the rotation and the bullpen because the Sox can offer some (not all) of their best prospects and at the same time pay good money for quality starters because they can spend $90M more and still avoid the surtax or whatever it's called. But moonslav also says we have no idea whether JH will go for that.
The irony of that is that right now this year's lineup--the 1/2 of the team that scores the runs and now and then plays defense--is hitting up a storm and most will return next season along with Story and 1 or more of the hot prospects now at Worcester. The bats look pretty good, and, if Story and Mayer are both viable, the defense should be too.
I'm not a big Breslow fan, but I also think he was given a near impossible task. In fact, right now I doubt that John Henry or anyone else even defined what that task was. But now he's about a year into the job and can see clearly what needs to be done. Thanks to that core of Devers, Duran, Abreu, Rafaela, Ref, Casas, and Wong--along with Story, Mayer, et all in the wings--Breslow can focus on the pitching. But, as moonslav insists, he must have JH's support in getting that pitching.