Do you think that they aren't participating in the insurrection? The presidential immunity question should be enough to answer this for you, before even considering that Thomas' wife was actively helping coordinate J6.
There's a coup still underway and SCOTUS is right at the front of it.
Are you serious? You didn't think that you're splitting hairs a bit?
"Yup. We have to let them go. Sure, they overthrew the government, but some pedantic arse said they need to be directly involved in violence, not just undermine democracy from the bench, in order for it to count."