I mean, it's pretty obvious that the expected additional kidney cases per donation is less than 1. We aren't talking about an exponential explosion of kidney transplants, it tends to a finite sum with fewer deaths.
Because it's an argument against the idea that kidney donation doesn't make sense since it causes more cases? I mean I guess there's a world where 25% of global GDP goes towards surgeons moving kidneys around, but between you and me I suspect that this particular function trails off a lot quicker than that.