Federal judges who decide cases where they have no jurisdiction are black robed tyrants. That would be at either side of the argument.
Look guy! If Californians vote to change the definition of marriage, I don't believe SCOTUS has authority to step in there either. Are we clear?
Well then we have no argument- Federal judges do have jurisdiction over Constitutional matters- that is why federal judges have overturned State marriage laws multiple times in the past, and federal judges have overturned State gun laws in the past.
State laws are subject to the U.S. Constitution.