I agree with your first sentence above.
As for your second sentence – probably. But there is another possibility we can hope for until it is likely dashed in a few weeks.
Suppose that most of the justices already read the Colorado decision. I think this is highly plausible! And suppose that most of them were impressed by the majority ruling. OK, less plausible. But if they are thinking of declaring Trump an insurrectionist for ballot access purposes, they are going to be too busy next month to spend a lot of time on the Jack Smith situation. And if they think they will actually end Trump’s political career, there is no reason to rush his trials.