Texas generated a lot of wind and solar electricity during the heatwaves, but it had limits.
You pose a lot of question in your article that there are really well-documented answers to. For example, a primarily wind + solar grid can be cheaply constructed. I give a brief summary here: https://youtu.be/BgR0xCwVMQs?t=1198
Good point: wind and solar are long way from replacing fossil fuels for our electric needs. But isn’t it good that Texas can can burn up to to 50% less fossil fuels at least for a few hours on most days?
Does Texas have any means for large-scale energy storage such as hydroelectric/pumped-storage?