The 5 Sox starters' (Pivetta, Eovaldi, Wacha, Hill, and Whitlock) combined WAR totals +6.1. The relievers combined WAR (including plusses and minuses) is +1.7. And don't forget, the starters normally have to face opposing hitters at least twice in a game. Relievers usually (Houck has been an exception) don't.
Then, as Old Red likes to remind me, there's the little matter of 14 saves out of 28 save opportunities. Almost laughable is that in the two wins vs. the Cardinals, there were no blown saves even though the Cardinals scored 4 runs in the 9th (to get the score to 6-5 with 2 on and 2 out before that final out) in one win and 3 in the 9th (final score 6-4) in the other win.
Maybe my "lousy" is short of your "dire," but my opinion, which ain't worth much, is that Alex Cora is on his way to some pretty important decorations (see Slim Pickens in Dr Strangelove) for bravery.