Yikes, you're still arguing?
What's common sense is that Goku clearly doesn't have power null.
So you disregard everything I say and just claim I'm spouting irrelevant unobjective opinions without any reasoning other than "Because I say so"? If anything, the one basing their views on nothing but an opinion is you. Read below.
The point isn't that it's unexplained, it's that it's never mentioned or shown elsewhere and has no basis other than an extremely vague feat that you're only personally interpreting as power null. Indeed, feats don't need to be numerous to be validated, but this is an instance where Goku showcases what you claim is power null, but doesn't use it and never mentions it anywhere else in the entire franchise of DB's history, and it also being contradicted by the fact that it's literally Vegeta's new ability in the very same arc you're claiming he uses it in.
You're saying that something can't be debunked without straightforward and concrete evidence, the same argument people use to say that GoD Toppo one-shots Jiren because Jiren never actually showcased EE resistance.