Yes, we need more storage and generation. The author didn't say we're all good and nothing more needs to be done. What's noteworthy is that renewable energy is cheaper than CO2 emitting, and battery storage is cheaper than peaker plants. (And grid battery can come from things like salt, sand, brick along with better known components like hydro storage, doesn't have to be rare earth elements)
It's ok to acknowledge when good things happen while also recognizing bad things.