To be fair, the emissions from those gas turbines are far less harmful than the pollution emitted by the refinery in the area. It's still going to contain NOx and of course CO2 and it objectively will add to the total pollutants in the area. But fighting gas generators is less fruitful than fighting against the nearby processing plant that dumps aromatic hydrocarbons (benzene, toluene, xylene - all chemicals that once they enter the human body have no real biological pathway to be broken down and removed... they just bounce around and fuck up things until they cause cancer).
I've worked around these new datacenter generators. One thing that they do really well is they have huge power storage capabilities because the datacenter draw can ramp up and down by tens of megawatts in less than a second. So they have to use a combination of batteries and flywheels to buffer the increase. This means they're far more efficient than even normal grid operations.
I'd still like to see much more solar, however. But it's a red state so the higher long term cost of burning fuels and maintenance of moving parts is worth it for owning the libs.