"Wind turbines were a factor, but only a small one. Wind in Texas doesn’t produce as much power in the winter, and regulators don’t typically rely on wind turbines to provide significant amounts of power. Instead, regulators anticipated that natural gas and coal power plants would meet demand."

This is a key paragraph that the author waves over without elaboration. Wind power makes up 25% of the power grid. When winter storm hit wind production collapsed and the load all shifted to natural gas which couldn't sustain the load.

Here is a thought experiment, if that 25% of the grid had been coal power plants instead of wind would the grid have still failed?