No offense , but ignoring the energy waste will not make the issue go away,
that is like ignoring that mole that turns into cancer and kills you.
This is probably worst comparison I ever saw, but if you are so big eco warrior that stop driving cars, stop using electricity for anything, and don't use your bank and credit cards because they spend more energy than Bitcoin.
PoS was created to fix it, so this has been an issue ignored for years already.
Proof-of-stake is created only to make owners and whales richer, and it has nothing to do with decentralization, security or saving of energy.