I see it very differently. Bitcoin is a good idea but really inefficient.
At the end of the day only a secure balance matters.
Energy cost is the balance protection of bitcoin.
If a better model comes, bitcoin loses 100% of its value with time. But that's ok.
Will it mean it will lose value soon? I don't think so.
But Bitcoin already wastes a lot of energy for nothing ( mining could be also real-world problem solving).
Wasting renewable energies doesn't make it better. And I'm not a green "safe the planet". It's simply unsustainable.
Look at the curve.
Look curve in 10 years, look in 20. Doesn't work. Bitcoin could fork to something efficient or something else.