Biden can mobilize the powers of the Federal Government to start with, and put his busy SJW agenda on hold for a bit. The Feds managed to do that in all other previous disasters as you do know. If he can use the NG to secure DC, they can also be activated for disaster relief and help to unfeck the situation.So you are saying that states have no responsibility. I seem to remember Trump saying it was down to states to sort out the problem.
What would you like Biden to do. Reconnect Texas to the grid and take over ERCOT and put it right.
Besides your hobby horse what has Biden not done that was in his power to do. You can't sort out a problem of poor maintenance over night.