Is this fair?

[Aoi Magi]

Look at the prosthetics I brought up earlier for example. There is a set of "blades" that was not allowed in competition because it was determined that there was far too much advantage, so a sports federation can simply decide to cut back the size and strength of the blades to the point where the disabled athlete will only win by a few seconds rather than winning by a huge margin...

This is the exact point, the sports federation is much better equipped to judge whether something is too advantageous or disadvantageous to the competitors, and once they have determined that, there is no need to cry foul unless someone is violating those rules.