As always no numbers, and argument on an engineering topic which is at the level of literary criticism.
to make the case you need to take a specific system where there is data available, and show that your argument applies there.
The most accessible in a few clicks is the UK. Go to www.gridwatch.co.uk for graphics. If you want the csv data free get it from www.gridwatch.templar.co.uk. Do the work and you will see that in winter there is peak demand of a bit under 50GW and that solar is basically non-existent from about 22GW faceplate. A function mainly of latitude with a contribution from weather. You will also see that there are in most winters periods of a week or ten days when wind generates less than 3GW from faceplate installed base of about 32GW. So what we have here is peak demand with peak low output from wind and solar.
In summer on the other hand you have peak solar and long days, but summer is not when you get peak demand.
What's the result of all this? Its that if you want to supply 50GW peak you have to have more than 50GW gas generation. But having it, you then only use it for part of the time, because part of the time you have wind and solar peaking. Something else also happens, at peak production, which does not coincide with peak demand and often in summer coincides with low demand, you have to turn off the wind.
The UK, if government plans work out, is going to end up with around 200GW of generating capacity to supply about 60GW of peak demand. And in operational terms, its constructing huge amounts of generating capacity off the north coast of Scotland or similar inhospitable places distant from demand. Then it constructs hugely expensive transmission links to bring this generated power to where its needed. It also builds gas to cover calms and nights.
So the result is, it pays people to install wind, then it pays them not to generate from it. Then it pays others to install gas and generate from it in the timesa when the guys its paying not to generate comply and turn off. The result of this is the highest electricity prices in the industrialized countries - and no, I am not spoon feeding you numbers, llook it up for yourself!. And it is only getting worse. The more wind they install, the more they have to pay to turn off, and however much wind they install the lows are still going to need gas to cover. The same thing applies to solar. It doesn't matter how much you install, at 5pm on a January evening, its going to be producing zero.
What you can see from the UK is that the attempt to move to 'renewables' is an attempt to do the impossible. Its trying to run a country's electricity supply with technologies that are guaranteed to have peaks of production which coincide with lows of demand, and lows of production that coincide with peaks of demand. It is not working, and as the proportion of wind and solar rises its going to get worse.
All this is happening with the background of the program to move to EVs and heat pumps. And they also have the fantasy of a huge data center industry. Right, with expensive and unreliable electricity? Because they have also just empowered the network operator to do rolling blackouts, which they call 'demand management'.
This is what happens when you have people with degrees in literature or media studies or some kind of vague social subjects enthusiastically trying to run the power generation for an industrial economy, and having no idea how to plan and no concept of engineering. They just keep saying that the wind and sun are free - as if that had any bearing. And they keep applauding whenever wind and solar reach a peak of a day or a week or month, not seeing that that is part of the problem and not part of any solution.
Get some numbers and do some work. And read the Royal Society's report on electricity storage, which blows the idea that batteries are the answer into the air.