Ahem. To be honest, I think the primary architect for 2018 was DD, who brought in four key arms--Sale, Price, Eovaldi, and Kimbrel--and a very good bat, JDM, who I think made all the other Sox bats better. DD did inherit a lot of pretty good hitters.
Nevertheless, some credit must go to Cora for the best season in Sox history.
Then the pitching collapsed in 2019 and the Sox missed the postseason, but still had a winning record. Still, John Henry fired DD because he realized he was paying a whole lot of salary for not nearly enough performance. Plus he was about to lose Mookie Betts whom the Dodgers were willing to pay $365M.
2020 was a losing season and also the season when Cora was banished from MLB for the Astros sign-stealing.
2021, Cora returns, but the Sox no longer have Mookie, Beni, Sale, Price, Kimbrel, JBJ, Moreland, Porcello, et al. Barnes turns out to be terrific closer, but only for half a season, after which the closer becomes "assorted." One could fairly argue that a good bullpen is a manager's best friend and that that usually includes a reliable closer.
Nevertheless, the Sox whip the Yankees in the wild card and the 100 win Rays in the ALDS before losing to the Astros, 4 games to 2, in the ALCS--and they do it without a closer. In fact, they have 0 saves in 11 postseason games in 2021, but only 1 blown save (in the 6th inning of a game Sale started and lasted 2.2 innings). That to me suggests masterful managing by Cora.
As for this year, 2022, please name another Sox team with such horrible pitching--due mostly to rampant injuries--that did better than this team's 72-77 so far? Only one other AL team has given up more runs than the Sox 715.
Plus, and here I don't have the stats to back this up, but it does seem to me that RISP disease has hit this team especially hard.