The article is paywalled, but just from the first snippet I don't see how it's relevant. If you're replacing oil or coal based power generation with wind, then that's awesome. But my assertion is that you do actually need to supplement that with something that can be tuned on the fly to keep a stable frequency in the grid. So far the experimental designs to do so with massive "batteries" have not looked very promising to me.

A rule of thumb is that you need a minimum of 20% of your grid to be tunable. That's a hard minimum.

We're literally about to turn on snowy hydro 2.0 for base load AND storage