Your citations state that lawns consume 60% of household water, implying that this leads inevitably to environmental catastrophe.

But household water usage is a small fraction of total fresh water usage.

In a dry region like California, households consume only 10% of total fresh water [0].

In regions that get more rain, households consume a much smaller fraction than that.

I'm all for conservation, but if we converted every lawn to cactus and every resident switched to once-a-week bathing, would that delay the "destruction of the planet" by any measurable amount?

[0] https://www.ppic.org/publication/water-use-in-california/