If you are really open to a different framework for analyzing energy policies, I recommend The Moral Case for Fossil Fuels by Alex Epstein.
The Internation Renewable Energy Agency (IRENA) supports these findings: https://www.irena.org/newsroom/pressreleases/2020/Jun/Renewa...
Certainly the electric grid in the USA is in an unfortunate position because it is not so well connected, looking quite island-like. There is a great need for much higher long distance energy transfer capacity and better interconnects.
We know, that the wind doesn't blow constantly and can quite reliably predict it days in advance/ can also apply statistics. It is a factor in planing from the start, else you cannot calculate the return on investment and will not get financing. With storage or enough transmission capacity, you can work around this problems and flatten the peaks and valleys in production or demand. The central limit theorem is your friend: https://en.wikipedia.org/wiki/Central_limit_theorem if you have enough independent sources (which you create by having long distance transmission capacity or vast storage capacity basically).
Also, in some rather remote parts of the world, solar and wind (and perhaps micro dams) is the only way you can generate electricity economically. This doesn't only concern islands and "third world" countries but also remote parts in the USA.