Things that are impossible won't happen, whether a judge rules them to happen or not. The question is whether it can happen or not.
Courts have ruled that the state is constitutionally required to pay the full pension amount. Everything else waits in line for any money that might be left.
I suspect the judge(s) was fully aware his ruling had no effect on economics. I'm guessing he also knew the ruling class has no problems with breaking promises and was just driving a stake through the heart of the corpse to make sure it didn't join the ranks of the walking again.