I mean, the wastewater issues can be real in some environments. It's not a completely insane idea and like all things can be reasonably discussed and mitigated. It's not like these things have the ecological impact of steel foundries or fruit orchards, but they're not parks either.
I do think the tech industry would be wise to do more outreach and less sneering, though. Freakouts about AI (which ultimately is what this is) aren't "rational" but they're eminently "reasonable". This isn't like electrification or aviation or the internet or whatnot (technologies that had clear, tangible benefits that everyone could see and understand), there is real discussion happening, by real experts, about essentially all non-physical labor being replaced!
And... what do regular folks get from that? Talking to robots doesn't look like a quality of life improvement!
Basically we in the upper stands here are having a "Let Them Eat Cake" moment, and we should stop. Things are getting ugly.