For long I read bitcoin isn't environment friendly and the cost of bitcoin mining is exorbitant.
This is the main reason why many organisations and governments are criticizing bitcoin.
There are energy and environmental concerns involved with mining bitcoins but any organisation and governments that hides behind those reason alone as their major reason for not allowing bitcoin are merely being hypocritical. I have always said that prior to bitcoins we have always had environmental concerns and then rather than criticizing the environmental friendliness and mining cost of bitcoin they can seek to profer proper solutions to address these issues or if they are without idea seek to adopt ideas like what OP has suggested and make it work.
I completely agree with you... The governments are being hypocritical .
But what if we make bitcoin mining become a reward for setting up bio digesters for waste management..
The higher the prices bitcoin achieve more will be the rewards for creating clean energy from waste and utilising it for mining.
The world will embrace, bitcoin as a saviour.
You have a great idea and if you do, we will contribute a lot to reducing waste into the environment but with this to say makes bitcoin a savior, i don't think it will. Even if we make bitcoin cleaner using renewable energy or your idea, they will find other reasons like bitcoin is heavily used by criminals, highly speculative, and highly manipulated...I believe they will always find a way to stop bitcoin, and slander bitcoin because they didn't like bitcoin in the first place because it is decentralized and uncontrollable.