There is lots of criticism for energy consumption by different blockchains and flow is very much energy efficient. Thats the reason there is no way any country is going to ban it. Thats why CATA making partnership with flow blockchain.
Yes there is great debate going on that also. Recently Eth also shifting on PoS also just to avoid too much energy wastage to keep alive the blockchain. Its a good move by Cata to partnership with blockchains that are energy efficient to avoid any future problem.