I don't see what this has to do with the rule of law, though. The party can set up whatever rules it wants. Certain practices might turn voters off though. Sounds like this one bothered you, and rightly so. I imagine you are not alone. Will this stunt lose them money and support in the long run? That remains to be seen.
From a pragmatic standpoint, if delegates are not awarded the additional caucus time won't matter. .....or shouldn't, were it not for a shallow, idiotic, sycophantic media. As has been said, they'll no doubt report vote figures - not delegate counts.