You raise good points, but I think none of the anti-renewable arguments are really show-stoppers, mainly because of how cheap things have become; solar panels are cheaper than glass windows now and prismatic LiFePo cells are down to ~$60 for 1kWh at single digit quantities (!!).

Figuring out the most economical mix of overprovisioning, improved grid connectivity, battery storage and more exotic longer term storage (synthetic gas/heat/fossils + capture/etc.) is a problem that is IMO best solved by the market over time.

I also think it is very telling how even a nation like France, which is basically in the perfect position to stick with nuclear power over renewables is still building out wind/solar rapidly. Nuclear power not even managing to defend its home turf makes it very questionable to fully bet on it elsewhere.