Good article.
It boils down to ‘every watt of intermittent/uncertain power must be backed up by a watt of reliable power’. Every windmill has a gas turbine to supply when the wind isn’t blowing.
That IS part of the cost of the unreliable renewable energy source. Sometimes, the wind doesn’t blow and the sun doesn’t shine. And when that happens, there’d better be coal, gas, or oil ready to back it up.
In Texas at least,there certainly is but Wimpy Abbott won't do it.