Actually, if they had not cheaped out and had built their infrastructure for the potential weather conditions that do happen in TX occasionally then all of the systems would likely have worked just fine. Wind turbines can generate efficiently at -40 if they are set up properly, if TX hadn’t kneecapped themselves their wind power likely would have done quite well in the high winds that generally accompany an arctic front... sure works just fine in a lot of other places.
I know that’s inconvenient to the right wing windmill cancer narrative but it’s undeniably true. Just like the fact that the natural gas plants would have likely done just fine if they had been protected against freezing.
Burning coal isn’t the answer. Planning, thinking and setting up the overall grid to function efficiently with input from all sources is.