That’s a cherrypicked low point, which is unsurprising given wind is not a permanent energy source. 30GW nameplate capacity is nowhere near the production you’d expect of wind (hell even nukes are not expected to come close to 100%).

Texas’ electric mix is 75% thermal, and that’s what shat the bed, at peak 34GWe of thermal was offline. Even if wind actually accounted for 6GW missing dieting the entire event it would have accounted for a small minority of the missing production.

And more specifically Texas gas is 66% of expected winter capacity. That’s also where most of the outages are.