Your own link shows coal, gas and biomass production as flat throughout a day while solar ramps up and "crushes the grid"? They all pay a price for doing so when cheaper cleaner energy is avaialable and they presumably find it a better choice than ramping down their boilers.

Why do market based financial incentives to shift demand and balance supply and demand freak you out so much?

Do you have the same visceral reaction to cheap prices used to shift demand towards overnight periods for nuclear? The frequency of that increased as people built nuclear too. Some even spent millions on storage systems to take advantage of it.