While the Texas grid does have issues related heat waves, it's not alone in that regard. Basically every southwestern state does, including California.

There are stark differences between 49 other states and Texas.

Texas power grid has been systematically gutted
regulation and inspections are defunded, as Texas refuses the inspections required to join the nations power exchange as a peer.

And the big one

now they're not exchanging power, they have to buy from their rich constituents, at a premium, and they gut the bank accounts of your tax money

They're set up for failure and occasionally they succeed.