“You’re assuming the SCOTUS will even hear the case.”
He is not a man of empty words when it comes to matters of substance. He was - again, IMHO - giving a very clear warning to the SCOTUS that they had better hear these cases and make a decision that is consistent with preserving our Republic. He specifically indicated that our country would cease to exist if this stolen election stood. The warning is clear - “handle it legally to preserve the peace, because if you don’t, then I will handle it by other means that won’t necessarily be so peaceful or accepted by most of our population.”
So either the SCOTUS understands that, or we have a huge problem - because Trump’s speech was nothing else if not a very clear indication that he is NOT backing down, that he will do what is necessary to preserve the Republic. He clearly put the ball in their court (no pun intended, but it works anyway).
With Barrett on the Court, I think that they will take the cases...but time (and not a lot of it) will tell.