The Silent Hemisphere and the Split Brain

In all of these studies there are limited ways to communicate with the silent hemisphere right with with the brain that can't talk. In reading a bunch of these studies spanning over decades it felt like none of these studies ever got past the party trick phase. i would not be surprised if in like 30 years as happens in science sometimes there comes a study where people say oh we know for a fact that the split brain phenomenon is  garbage right?