Vegeta went out like a champ. I don't think they could wrench out the same emotions with Goku doing something similar.
UI Goku now hurting Jiren whereas before he couldn't do shit to him, now that's a storytelling problem. It's just another power scaling issue among many in the series. Goku couldn't even get a reaction out of Jiren when he went UI before, even when he went all out with that final flying punch Jiren just caught it (after which Goku powered down because he ran out of power). Goku didn't even make him flinch when Jiren just tanked UI Goku's assault in that episode. After that I just cannot buy that punch doing anything.
It's a real issue how they have treated God of Destruction Toppo and Jiren near the end, Aniraza looked more impressive taking on Blue Vegeta, Kaio Ken x20 Blue Goku, True Golden Frieza, powered up Ultimate Gohan, and powered up 17 at the same time and overpowering their combined beam without much effort. Hell 18 was helping that combined team earlier (though they all weren't powered up in those forms) and was taken out. Aniraza even sent a beam flying to Toppo, Jiren, and Dyspo (which Jiren dissipated). He even destroyed 17's barrier when 17 used it to fly through the energy ball and that wasn't even intentional the ball was just that powerful. If Jiren is supposed to be beyond even Aniraza they are doing a piss poor job of showing it in these final episodes after U3 was eliminated.
I mean the extended preview of 129 shows UI Goku failing against a non-powered up Jiren, but that punch at the end of 128 shouldn't have even registered, it was just a plot device and not consistent storytelling.
I'm still betting on mastered UI Goku not actually beating Jiren, and powered up Jiren and mastered UI Goku just fight long enough for time to run out and Frieza to pop out of the rubble and U7 to get the win based on having more contestants left. The anime is leaving enough hints with Frieza missing but never counted as being eliminated, and the whole storyline with Jiren only being able to count on himself whereas Goku can count on his teammates, with even a former enemy in Frieza being one he can count on. I hope the manga does a whole lot better with this; it has so far, I just want to see something different and better than what the anime has done.