We are also busy converting a very diverse energy mix into a narrow range of interconnected sources, which is not good for existential risk. In the future, a power failure could mean no electricity, no heat, no emergency services and no way to travel out of a disaster area.
Are we though? We are fazing in solar and wind, and fazing coal and oil. Plus, solar and wind can be more distributed. You can’t install a coal plant in your back yard, but you can install solar panels and a wind mill. Grid storage is the big bottle neck, but for the price of a nice car, I can make my house energy independent for the next 15-20 years.