> Maybe having more nuclear power plants instead of wind would have helped?

No. Most of the missing production was not wind, and several nukes went out (unclear whether that was because the grid was dying though).

What would have helped was proper standards (avoiding emergency being much of the reason why Texas still has its own grid) and properly winterising.

The wind thing is just a bullshit excuse, the vast majority of the missing generation is in fossil power plants. Even with half the turbines frozen over (which still has to do with Texas’ lack of proper winterization, those things work fine in Canada, Washington State, Montana, etc…) wind performed above expectations for the period.