The 2021 bullpen was extremely good lead by Barnes, Ottavino and Whitlock (and eventually Houck) at the back end. Barnes was an All Star until the wheels just fell off. Granted he was having a career year so regression could be expected, but he regressed down to the level of Beer League Benchwarmer.
It looked to me like maybe the Sox thought he could bounce back from his 10 inning slump at the end of 2021. And if he did, even to his serviceable less-than-All-Star norms, a bullpen anchored by Barnes, Houck, Whitlock, Taylor (remember him?),Brasier appeared to be the plan and in reality, shouldn’t be that bad. And if things swung right, could be an absolute strength. And that’s before we even mention names like Diekman, Strahm and Davis.
The problem was the Sox kept dipping into the bullpen to fill injury voids in the rotation. Not sure if that was Bloom, Cora, or (more likely) both. But all during the shutdown when Sale was not allowed to tell the team he was injured, the bullpen didn’t look as bad on paper until it turned into what was left standing.