The unique feature of the Texas deregulated grid is that lots of end user products expose consumers to dynamic pricing. There will be lots of households that are exposed to these extreme price swings.
It's near impossible to sign up for a dynamic pricing like Griddy anymore. Practically nobody is on it. Even back in the Griddy heyday it was like ~5%~ 0.3% of consumers on those kinds of plans.
https://legiscan.com/TX/bill/HB16/2021