the problem with renewables is they are intermittent and the energy requires storage.
And the Bitcoin network is decentralized. Wherever might not have wind power, might have geothermal power, and wherever might not have solar energy, might have cheap electricity. The fact that renewables are intermittent would only matter if there was a single entity responsible for mining; there isn't. There are thousands of miners, all over across the world. Also, not all nations have carbon taxes, and those who do, don't have the same tax.
Simply stated, he believes that Bitcoin has no value because he is personally unable to see any utility, and everything else he said follows logically from that.
Why do these people never have a proper interlocutor?