There are multiple other browser startups in development that are not Chromium based. Like LadyBird (which is completely independant), and Zen browser (which started as a FF fork)

It doesn’t use water in the sense that it is consuming it. It “uses” water in the sense that it is temporarily in a datacenter, gets a little hot, and then leaves the datacenter. I don’t even think a lot of datacenters use actual drinking water, instead taking water directly from a river, warming it slightly, and putting it back in said river.

Not to say I like AI, or think it’s a good thing. But this phrase that’s been going around just bugs me, because it’s really misleading. We should be focused on the ridiculous amount of energy it consumes, not the water it temporarily uses.