I'll take the guy who's trained for like a hundred years having access to UI and being Goku's inspiration over Goku learning shit from being swallowed by a black hole any day of the week lmao.
And I hate Roshi.
Except this goes against the lore in the manga. Goku saw Beerus used UI in the God of Destruction Royal. So why did it take Roshi doing a version of UI for Goku to get it? He copied Haki from Beerus, yet didn't get inspiration from Beerus dodging 11 gods, which shocked Goku when he saw it?
And in the anime, he wasn't swallowed by a black hole. He nearly died to his own attack and the trauma along with the will to survived got him access to UI. Herms made an entire post about this on Twitter.
If you're mock something, at least get the basic details, please.