I specifically avoided saying they did because I wasn’t knowledgeable on the topic. But I agree, I could equally be accused of being disingenuous by phrasing it in a way that could lead people to assume they use closed loops.

I did look those up, and while evaporation cooling isn’t the only method used, it also doesn’t evaporate all the water each pass, only a portion of it (granted “a portion” is all I found at a quick look, which isn’t actually useful).

I do agree though, the water usage is excessive, and when though that water only “changes forms”, it’s still removes it from a water source and only some of it may make its way back in.