This is generally true. And I assume the reliably liberal Texas Monthly spares no opportunity to gore conservative oxen, so I expect this article does so with bias and glee. But Texas politicians have spent a decade laughing at the power woes of California and other over-regulated hellscapes, so the 2021 winter storm and subsequent outage was a bit of a comeuppance.
It turns out that power grids don't really care much about your political philosophy. They still require competent engineering and maintenance and planning and accountability. And that requires smart people doing their jobs with adequate resources, which isn't guaranteed whether you've voted for the deepest blue or the brightest red government you can get.