My understanding is that cicadas only consume plant sap. I don't think hops are very sappy.
Locally we get locusts, those big f##king grasshoppers that eat everything just like in the Bible. Now they do eat leaves. They can strip a whole bine to nothing in hours, which kills the plant off. I've tried the various organic solutions, like soapy water and neem oil. Nothing keeps them from eating. I've even tried chemical pesticides (which I know I shouldn't use) but all they do is eat all the leaves and die, leaving plenty other locusts behind. The only good answer I can think of is creating a physical barrier, like screening, that they cannot get through. I will probably have to enclose my hops in screening before the locusts show up.