This isn't true for the town Elon moved into in TX to house his new xAI datacenter. It was an existing town and they are using portable generators that are completely destroying the air in the town. All happened in the last 2-3 years. And because the generators are "temporary" they didn't think they needed EPA approval. They are apparently breaking existing laws, and told the community only a few of the generators were online, however infrared photography showed that almost all of them were operational.

There is a long history of this sort of thing.

A video about this: https://youtu.be/3VJT2JeDCyw?si=lzbBWQjXk-o0cblD