If so, then I still think you are wrong.
I'm not claiming the Sox are knee deep in good pitchers. Far from it.
What I am saying is that they have a dearth of usable position players, which is exacerbated by having right now an amazing lineup and no need to freaking platoon.
So 4 subs is about right. One good pinch hitter, Shaw. One versatile guy who can run the bases, Santana. One backup catcher, Plawecki, who also catches Eovaldi. And one spare first baseman, Bobby Dalbec, who is hitless in the postseason and has a DWAR of -1.3 but still comes in for Schwarber when the Sox have a late lead. To me Bobby D makes the case for only needing 12 position players, except that one can argue another spare could come in handy.
The pitching, meanwhile, is spotty. Houck was great vs. the Nats and especially in game 2 of the ALDS, but has given up 3 runs in his last 2 innings, 2 of which led directly to the ALCS game 1 loss. Pivetta has been terrific, but he is still Pivetta. Robles ERA 5.79. Sale ERA 14.73. Brasier ERA 5.40. Sawamura 6.75. D.Hernandez 27.00.
Given the above, Whitlock, ERA 1.42, Ottavino 0.00, Taylor, 0.00, and even Perez, the 13th pitcher, whose ERA is 0.00 in 1.2 innings, become especially valuable.