I did not "defend" 2016 or 2018. You assume a lot, as always.
Yes, AGon in 2011 was awesome, and we haven't had a full season like that since. I'm not disagreeing with you.
The numbers did point out AGon's 2012 version was close to the same or even worse than some who came after, including Napoli in 2013 only, HRam in 2016 only, and Moreland in 2018 only. I specifically said I guess Dalbec's 2020 does not count.
Yes, their seasons were pretty much "middle of the road," except for maybe Napoli's 2013 season, but so was AGon's last season with the Sox. When you say "since AGon" that should count 2012, too.
When combining all seasons with the Sox, AGon beats out napoli, HRam and Moreland, so in that sense, he was clearly the best we've had in a decade. It's not even close:
wRC+ since 2011:
138 AGon
116 Napoli
115 Dalbec
108 Moreland
103 HRam (some in LF)
99 Shaw
80 Chavis
OPS
.895 AGon
.819 Dalbec
.803 Moreland
.785 Napoli
I was just providing facts and looking at individual seasons. It might not be how you were making your judgment or want others to view it, but it's a valid way at looking at our 1Bmen over the years.
I know I can be hypercritical, at times, but you take it to a very high level.