So your argument is that if people want to do something, they should be allowed to?
Denmark, famous for its wind farms and for having too much renewable energy at times, only has 6.1GW of wind capacity, which is is a few gigawatt short for the Bitcoin network.
So no, there isn't an abundance of energy when you decide to throw it all away as fast as you can.
Also because of how the Bitcoin algorithm and economics work, if energy is cheap then the market will scale up mining thus the Bitcoin algorithm will scale up difficulty. Cheap energy results in more energy waste from Bitcoin.