These are off-the-shelf generators, not bespoke built on-site. They typically have NOx emissions even lower than modern cars.
There are probably twice that in the community complaining...
Also the stat is from GE Vernova, they make the generators used.
If you really want to argue without having the flex and bend to grasp at straws, just go with the noise argument, it actually is annoying to people nearby.
How do you figure?