They didn't do it after 2011. I don't see why 2021 would be different. These once-a-decade events cost very little compared to winterizing. TX is on year 23 of a deregulated essential utility experiment.
Here in Maine we experience the weather Texas had basically bi-weekly in normal winters (it's been very mild the past few years) and IF your power goes out, it's back on in 4 hours, 20 if it's a particularly bad storm and you are a low priority area. Meanwhile the wind turbines up north will happily keep spinning, and at no point has generation failed.