The whole point of the article is that it shouldn't be embarrassing. The current dark energy theory is just currently the best explanation for observed phenome

The whole point of the article is that it shouldn't be embarrassing. The current dark energy theory is just currently the best explanation for observed phenomena (or was, I'm not sure what you're referring to). Even if it's wrong, the Nobel is still deserved even just for making that observation, because it encourages others to pursue science.