I think this indirectly applies even though it is based on contracts. Consider a situation where the SCOTUS tells a state that they didn't do signature matching and that they must go back and do it. The state comes back and says they burned all the envelopes... no signatures. The unvetted ballots are now swimming around in GenPop. What do you do? You pretty much have to declare all mail in ballots corrupted and therefore tossed out.
I think this indirectly applies even though it is based on contracts. Consider a situation where the SCOTUS tells a state that they didn't do signature matching and that they must go back and do it. The state comes back and says they burned all the envelopes... no signatures. The unvetted ballots are now swimming around in GenPop. What do you do? You pretty much have to declare all mail in ballots corrupted and therefore tossed out.