You need to be insanely dedicated to burning rainforests and boiling oceans so that people can have AI write emails that other people will use AI to summarise and never even read the summary.
What does Blockchain have to do with the energy usage of Microsoft's computing centres?
Are you trying to downplay the compute required to train and run inference on these large language models by stringing together some contrived comparison to the now 'uncool' Blockchain technology? That would be absurd.