The SCOTUS could either hear the case or refuse and let the Florida supremes stand as lawExcept that SCOFLA can't make laws in Florida, AND the sole power to appoint electors rested with the Legislature, which was sitting and ready to act.
The appointment of electors, and the counting (certification) of their votes, are not within the scope of powers granted in Article III.
Whether I agree or not... and I tend to agree with you... my point is that it was the Florida Supreme Court and their unConstitutional actions that brought the case to the SCOTUS and that is why they had it before them. Had they refused to hear the case... yes the Constitution would have been followed but blood would have flowed in the streets and many would have been injured or killed., That time may very well come anyway. I think that is why they heard the case but the blame for it even arriving there in the first place was that damned to hell progressive court in Florida.
LLS