We could ask the same about luffy. Their recovery time is very much comparable considering them waking up at the same time. Both were quite fucked up at the end of wano. 7 days of sleep and both wake up simultaneously.
Ultimately it's oda's decision to make the previous sera fights relevant or not but if he does it for zoro, he'll do it for luffy too.
Though I don't really expect many more 'muhh I'm still wounded' excuses. Things got serious, especially after wano and Oda is drawing clear lines, like yonko Shanks no diffing and oneshotting 3B (Hongkong Berries) Kid and collateral diffing his VC.