This is basically like saying, "If you only account for the first passenger on the bus, busses are way less efficient than everyone driving their own sportscar!".
There are still many caveats and nuances when analyzing this number, but at least it would be a valid comparison.
Increasing the transaction rate does not require any additional energy expenditure and transaction rate (block size) has already been increased twice since Bitcoin's inception.
Dividing the total power consumption of bitcoin by the relatively small transaction rate makes for good headlines so I'd expect it to continue even though the two are unrelated.
https://digiconomist.net/bitcoin-mining-more-polluting-than-...
Gold mining is less energy intensive and produces more value.
the whole Bank of Italy emits 14.8 thousands tons of CO-2 a year, the equivalent of buying 185 Tesla in bitcoins.