Thanks for pointing that out. I don't think I conveyed myself well in my original post, this is a fantastic development but I feel like the article didn't emphasize that the development is really about moving towards the material science that we need. It felt like the article sensationalized the energy output per unit size and didn't focus enough on the material science challenges of the problem (as well as how much this will aide in their solution).

The authors clearly recognize this, I just wish the public understood it better.