We've all seen how streaky JBJ has been over his career, and I've defended that streakiness by pointing out consistent stellar defense and the fcat that his hot streaks have often been red to white hot and carried the team for stretches that sometimes lasted a month or two, but I don't think anyone truly believes that had the 2020 season been 162 games, JBJ would have had similar numbers over the 100+ games added.
It's not that it shouldn't count, and that stretch does add some hope that he is not in a severe decline mode, but he does turn 32 in April.
His fWAR does not show a long steady decline like bWAR does.
2.0 in 2015 in just 74 games
5.8 in 2016 (156 gms)
3.4 in 2017 (133)
2.5 in 2018 (144)
2.0 in 2019 (147)
2.0 in 2020 (55 games)
-0.7 in 2021 (134)
One could argue 2020 was more of an outlier than 2021, if you projected a 5.5 WAR and considered the natural decline most players have as they age past 29 or 30.
Here's another look at the streaky JBJ:
OPS
2015:
.426 first 71 PAs
1.147 middle 129 PAs
.560 last 55
2016
,679 first 82
1.245 middle 121
.753 last 433
2017
.670 first 130
1.028 middle 146
.589 last 265
2018
.563 first 251
.851 last 234
2019
.443 first 150
.844 last 417
2020
.646 first 109
.991 last 108
2021
.365 first 28
.555 middle 346
.268 last 73
Thinking hopefully, one could look at the last 417 PAs of 2019 and all of 2020 and see over 600 PAs of nice hitting, and 2021 would look like a blip.
Thinking negatively, one might think we are looking at one stretch of 108 PAs of good hitting in the last 2 years and 635 PAs.