I just don't agree here. There were 2 plans of action that made sense in my mind:
1) Start him in the minors as opener. Very limited innings early on. Slowly work up to 3-4 inning starts by late May (call it 15-20 milb innings). Call him up in early June when you get the year of control back. At that point, the season is 1/3 over. Averaging 5 inning starts (and certainly giving extra rest where need) over the course of 15-18 starts puts him right around 100 innings by end of the season. Sure, he may be mostly fried by the postseason, but he was anyway and we got basically no benefit out of him anyway with the benefit of hindsight. Maybe his arm is stronger had they gone this route and he's not fried come October. But at least we'd at least have 5 years of control, 2 pre-arb years, and a stretched out front of the rotation stud heading into 2022. Best case scenario IMO.
2) Since they Sox decided that wasn't the best route for whatever reason, the other route was to use him in the MLB pen the first half the year and stretch him out in the 2nd half such that he was available come October. I think the innings shake out about the same as above (if he stays healthy), or maybe just slightly less. But the Sox ditched this plan for whatever reason - likely because TLR found him too valuable in the pen and was only focused on the present. We know how the 2nd half of the season shook out. Short of getting seriously hurt, this was a very bad scenario. We now have a guy who had primarily been used as a 1 inning reliever, has not started regularly since 2018, is not stretched out, another year of pre-arb control gone, and a ton of question marks heading in 2022. Very bad.