Millions of gallons of consumption and brine sewage is not a trivial problem for places that are rural.
When I buy water it has sewer charges by default, which means if I concentrated that to seawater level they'd be getting 100x or 200x payments to process it, and even higher for brine.
It's possible to meter the sewer separately, but there are extra charges for water with too much biochemical oxygen demand or suspended solids. Throw an extreme salinity charge on there so they can pay for full treatment and then some.
Is there a reason to have datacenters directly fund facility upgrades?
But the real take away is don't let the black journalism scare you. using water for an evaporation cooling system is about the least bad thing you can do with it.