No, it was not having a black hole at 2b, having a CF that could actually hit, having a 1b that could actually hit, JD regaining his swing, ERod coming back healthy, Sale providing a decent 1/2 year, getting 30 GS out of Pivetta, the additions of Ottavino/Sawamura and a full season of Taylor in the pen.
The 2020 Sox were 29th in starter IP and dead last in WHIP (top 4 starters were Perez, Eovaldi, Mazza and Godley). For relief, the 2020 Sox were 28th in WHiP and dead last in runs given up. Just getting mediocre pitching results really turned the team around.
The 2020 Sox were just a dreadful squad. Embarrassing.