1. 2020 was a nonseason, period. All kinds of players missed games because of COVID, plus it was a short season, plus basically no fans. So to me what Mookie did in 2020 is irrelevant.
2. The WAR's are the best measure of each season, and Mookie's average WAR--for 5 full seasons-- with the Sox was definitely better than the average of 2021-2023 with the Dodgers.
3. By the way, I do think Mookie is headed for the HOF. He's that good. But it is a rare player who gets an incredible contract because he's already had a bunch of great seasons and then plays even better baseball with the new team.
4. Moreover, a position player, even with a WAR of 10, can only do so much. He's one batter out of 9 and one fielder out of 9. Mookie was fantastic in 2018 (MVP), but that lineup included Beni, JDM, Bogey, Devers, Moreland, et al. And in the outfield he was joined by JBJ and Beni. And on the pitching staff were the good Sale, the good Price, plus ERod,Porcello, Eovaldi, closer Kimbrel, Joe Kelly, Wright, et al.
5. So my point is that, had the Sox kept Mookie at whatever cost, he would not have had remotely as good a supporting cast, especially pitching, as he had in 2018. Ironically (if you are a Sox fan), the best team for him to be on was and is the Dodgers. He would have been wasted on the Sox.