Many of those points had struck me eg Brian Eno and many Indians drink their own urine for its unproven health benefits , the latter because they were brought up to do so. Brian must be a convert.
The concept of an open, uncontaminated reservoir is ludicrous - at the very least birds flying overhead are going to go to the bathroom in it occasionally. There must be some further form of filtration before it comes out of our taps/faucets.
I have to say I admired the kid for his refusal to be cowed (though he could have expressed himself better).