I've yet to see anything touted as groundbreaking on web front-ends that wasn't thoroughly explored by unix forty years ago or Windows twenty-five years ago.

Isn't it the same for hardware too ? Most of the "innovations" in PCs were explored decades before in mainframes/supercomputers.

react has a message passing system? maybe if you're talking about react + flux. also, in windows, there's no render() that declaratively renders your widgets.