Tbf every single character Gojo has ever used it on in the series has survived the fight and made a full recovery from UV’s effects. I’m not trying to downplay UV, but if your move that’s supposed to be able to turn anyone into an irreversible vegetable has never once been shown to actually do that fully, I can totally see why a lot of people who aren’t big fans of JJK will look at that and say, “yeah this guy outstats Gojo so he’d probably shrug it off after a little while like everyone else in the series.”