tl;dw -- louisiana has a ton of natural resources and wonderful harbors, but has allowed corporations to get away with almost anything without paying their fair share of taxes, cleaning up their waste, or generally being held accountable. And likely related, there is a long history of rampant corruption in the area. With sea levels rising and cancerous pollution filling densely populated areas, life in Louisiana has generally become very difficult :(
No doubt one of the more compelling reasons for SpaceX to do it there (along with their given reasoning).
The plans for the site involve extracting significant amounts of natural gas to make methane to burn for the rocket fuel. If they hit the launch levels they suggest (thousands of launches per year), this is not a small amount of greenhouse gases they'll be emitting which of course helps accelerate melting of the ice caps and rising sea levels, which could threaten the very site they've built it on.
Either that or pay decent wages for American workers that'll drive up construction prices and worsen the inflation which is already crazy due to these criminal tariffs.
It's the only correct one. For proof, consider the inflation that happened when Spain looted gold from S. America, then during the California Gold Rush, then the Yukon Gold Rush.
All driven by an increase in the supply of money.