sboardcrazy said..An 'athlete' deliberately getting so fat and unfit they can't climb stairs so they can be competitive?

You should see American football players. They put on a lot more than that. Even the fittest and leanest are 85-90 kg and it goes up from there. I long campaigned for weight classes in American football so that everyone could participate at the pro level but to no avail (j/k).
btw, I think that it's
a bit a lot of hyperbole that TG gaining 10-15 kg leaves a very fit athlete unable to climb steps. If that were so, literally nobody would be hiking and camping in the mountains. I carried at least 15kg at altitude on a hike/climb (3000m) - reasonably fit but nowhere near Olympic level - older and smaller guy. I was about 73 kg at the time.
I lost 10 kg about a year ago. Totally wrecked my quiver and made it hard to carry my largest sail at times. Basically, I had to scale down a size. I guess that ends my Olympic dreams...

(That plus me being 35-40 yrs too old). Having done essentially the reverse of using a weight vest and being slow before the wait loss, I'm now just concentrating on staying faster than paddleboarders.