Roberts' ultimate point, translated from legalese - "They gerrymandered what you previously gerrymandered, and you want us to stop it?….Ever heard 'What's good for the goose is good for the gander?' Get outta here."
This is the best part, appellate law anons will know
This issue of lack or subject matter jurisdiction can be immediately appealed. It's not an interlocutory matter.
This means that the litigant does not have to wait for the lawsuit to conclude before pursuing an appeal. That is HUGE.