Nothing said about it either way here but it does state that the risk of later developing kidney disease for living donors is only around 1 in 200, because they’re screened for having healthy kidneys. And not all of those who do will require a kidney transplant. So, very low risk eventuality.
I think the waiting list is as much about finding a match as waiting in line? I’d imagine a living donor who themselves needed a donor would have a better chance than most of finding a stranger willing to donate to them. It’s the kind of story that tends to hit local, and sometimes national, news. And with many ‘stranger’ living donors coming forward, it would probably identify many other suitable matches as a result. So, at least you’d get the chance to save many more lives if you were one of the unlucky ones.