Sounds like a situation where a Constitutionally-minded court sees fit to stay out of what’s a legislative matter, leaving standing a Constitutionally-violating court’s decision to butt into the legislative matter.
I don’t think the Supreme Court has to answer to anything. They are the final decision makers. The Republicans will be fine. Just go door to door and talk to their new constituents. I don’t see that as a problem at all. Most have gotten so lazy and don’t even care about the voters. This is a wake up call for them. No more free rides.