You mean, I could have written something like "gas or, increasingly, renewables"? Which is what I actually wrote.
> 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.
You can also use that energy to charge batteries or pump water uphill the same way you would with excess solar and wind power. Doing so means you need a lower baseload.
Also, another idea, why not use that excess energy to sequester carbon? We do need to be carbon negative.
You could charge batteries with nuclear output, but why do so, when other sources are cheaper? And the battery charging can be moved around in time, so the intermittency of those sources is less of a problem.
Similarly, why use expensive energy to sequester carbon when cheap energy could be used instead?