I hate it because it goes both ways. IE the worse part is it more or less doesn't give a way to get proof.
IE the long and short of it is "we don't have to go to court and spend the money to argue if we ran a fair election, because the law doesn't require us to run a fair primary".
IE it's not "we cheated but we're allowed to cheat", it's "we're allowed to cheat... so we don't have to spend money proving that we didn't". Sadly that's a key problem with the laws in general, or the party system in general.