The weather in Texas is in the single digits. The weather in Minnesota is in the double digit negatives.
Texas would not be in trouble "no matter what" if they had bothered to spend the money on winterizing their power plants. They chose not to, and this is the end result.
The roads shut down due to lack of snow removal is completely understandable - and quite frankly most people should be perfectly capable of surviving in their homes for a week if they have heat and water.
The lack of updating power plants so they can function in below-freezing weather is just straight incompetence. This type of weather isn't some 1,000 year storm. They have extended below freezing temperatures on a fairly regular basis.