Well, I didn't like the implication of almost any chronic condition getting riders disqualified. That felt like the view you were heading towards, that sport is only for the superhumans (in the old sense of the word).
I don't know and I think that's a much more difficult decision than a normally non-enhancing chronic illness treatment like salbutamol or even a one-off PED shot or tablet by A&E for a bee sting, so I'm surprised if you don't see prosthetic limbs as justifying a ban.
When have I said that sport isn't for everyone!? But, by definition, sports at the
elite level are performed by
elite athletes and ultimately the whole point at that level is to determine which athlete has the greatest ability, be it through high VO2, lactic acid tolerance or longer legs. That's not eugenics, it's .... errr .... professional sport.
The use of prosthetic limbs
has been banned, at least when competing against non-para-athletes - see my previous comment - because there was no systematic method to ensure fairness. And that's where we are with the current case. As it stands there are legal mechanisms to game a competitive disadvantage (one leg -> asthma) into a competitive advantage (extra-springy blade -> asthma drugs with known or suspected PE properties).
You took issue when I suggested effectively abolishing TUEs and banning the drugs that they covered. I'd be equally happy abolishing TUEs and allowing
any rider to take the same drugs. At least it would end this moral indignation and dissembling.