While I think your "everybody knows" argument is valid, (and I must dig out that old Leanard Choen album), it is probably an oversimplfication, but that's what Twitter had done to public discourse.
I don't know the US process, only the way things work in Britain, but in this situation if I was in Trump's team I'd be looking beyond the supreme court.
As the article says the SC deals im matters of law and constitutional issues, it does not examine witnesses or hear evidence. But evidence would come into play if the SC found electoral law had been seriously violated and ordered what we would term a judicial review or a public inquiry.
Eeither of these processes hear hundreds of witnesses and examine tens of thousands of pages of evidence. And they take forever, which is team Trump's problem.They only have a couple of weeks until the electoral college must meet and must get the result at least blocked until then. So if that's the game Rudy is playing ......
Everybody knows the deal is rotten
Old Black Joe's still pickin' cotton
For your ribbons and bows
And everybody knows
And everybody knows that the Plague is coming
Everybody knows that it's moving fast
(from Everybody Knows by Leonard Cohen)