To be fair, that statement was in the grandparent and not the post I replied to. However, I'd argue

> Large steam thermal baseload plants are increasingly uncompetitive, coal or nuclear.

is generally wrong, since gas power plants are "large steam thermal baseload plants" and they're very much competitive. Large baseload plants are just as necessary now as they used to be since we'll still need power when the wind doesn't blow. The problem is nuclear needs to run at max power all the time to be profitable.