He's the one who taught it to vegeta...then goku months later who he spent far less time training I remind you.
He's not using UI if that's what you're saying.
Nor are any of the other angels.
Nor are any of the gods who have been training for untold millions of years.
It's without a doubt the poorest narrative decision and the worst power up in DB history.
I stand by that.
This power up and what they claim it is and even how he got it breaks so much fucking canon. I'm talking about a good portion of everything we know about martial arts and how ki works has been broken to push this stupid goddamned money making scheme of a superform.
There is no unfucking this shit and it outright DEMANDS that Goku spends as little time on screen doing fucking anythng as possible.
This show HAS to use all of the other characters now because Goku is now officially broken.
He fucking has UI and in the "offcial canon" he fucking has the hakai. AND he has the zeno button.
Goku has to not be anywhere in the plot for DB to continue now.
Nothing they can pull from their ass can fix this shit.