Google is not related with chatgpt. Chatgpt parent company is openAI which is a competitor with google.

A more rational explanation is that technology and digital services on general have been growing and are on the rise. Both because more and more complex services are being offered, and more importantly more people are requesting those services. Whole continents that used not to be cover by digital services are now covered. Generative AI is just a very small part of all that.

The best approach to reduce CO2 emissions is to ask for a reduction in human population. From my point of view is the only rational approach, as with a growing population there's only two solutions, pollute until we die, or reduce quality of life until life is not worth living. Reducing population allows for fewer people to live better loves without destroying the planet.