100% of the water that is 'used up' in a datacenter, or even in electrical generation, is evaporated into the atmosphere. The same one where the rain comes from. Everywhere East of the Rockies, they don't even have droughts, so that seems like a lot of area where we can use a lot of water with basically no impact because it's all just coming back into the water cycle directly as opposed to ending up in a water treatment plant and flowing into the sea.

We'll be able to increase chip capacity eventually, and we're also still doing pretty well at clean energy conversion. Eventually we'll get there.

I'm much less pessimistic about this.

Most new builds don't even use evaporative cooling afaik, this will probably be closed loop. The implications being you're not risking the local water table and overall consumption is lower, a lot lower.

The datacenter is still heating the atmosphere and consuming enormous amounts of electricity, which also heats the atmosphere. And it still won't solve our global climate disaster and is far more likely to contribute to a lot of bad things happening for humans.