There is a spectrum and the idea that wrestlers will be world class at 32 years old is a very new thing that is specific to only David Taylor, Kyle Dake, and Jordan Burroughs. Literally everyone else might make it to 30, and around then they lose their spot. They might remain capable of earning medals, but it is just the reality of American wrestlers. Honestly, it might happen closer to 28 years old, but I have not ran down the list.