The truth as told by Robin Wong...

His observations only apply to him. As a travel photographer I have to take the shot when I can get it. I can't come back the next day, can't wait an hour. No one's paying me, it's not a model shoot, no studio lighting. You get the shot, or you don't

High ISO capability allows more keepers. That's my truth, it may not be yours. For me it's that simple.

But he's right in one way, but doesn't carry it to the logical extremes. If was a studio photographer I wouldn't one little bit about high ISO. Probably wouldn't care about FPS, how many AF points I had, or half a dozen other things. Did he any mention any of this?