This is horrible article. The only number given related to LLM is 700,000 liters of water used, which is honestly minuscule in impact on environment. And then there are speculations of “what if water used in aria where there is no water”. It is on the level of “if cats had wings, why don’t they fly”.
Everything we do in modern would consumes energy. Air conditioners, public transport, watching TV, getting food, making elections… exactly the same article (without numbers and with lots of hand waving) could have written. “What if we start having elections in Sahara? Think about all the scorpions we disturb!”