There is an element of truth to what she says. Some of the athletes were crap when they were young and some still are, but does it really matter? 
They are enjoying themselves and while there are some who are in poor physical shape those who compete at a decent level will be regularly competing and in much better condition than their peers. I’m all for anything that gets people physically active. The results aren’t that bad either one quick example
Men 100 Meter Dash 45-49 Finals
(w: 0.8) 1, Ballard, Robert, Australia, 11.29.
2, Provo Jnr, D. Lee, Canada, 11.33.
3, Francois, Andre, Canada, 11.33.
4, Jones, steve, Australia, 11.73.
5, Isackson, Dave, Australia, 11.77.
6, Merriweather, Eric, United State, 11.78.
7, Blakemore, Damon, United State, 11.97.
8, Kountze, Michael, United State, 12.07.
9, Campbell, Marty, Australia, 12.12.
I had a look at the list of sports and they were actually not bad, at least they involved physical activity, better than some of the crap on offer at the NZ ones that include things like
Wine offerings? , Scrabble, Poker, Line Dancing, Fishing, Euchre, Darts, Cue Sports & Bridge.