The fact that there are ethical aspects to professionalism is bad in itself.
Professionalism is a system that is really built around efficiency and reducing conflict. But “reducing conflict” becomes to a lot of people “acting ethically”, because it involves doing right by the people you are working with.
But the “efficiency” part is in practice outright ableist. People who are limited and not able to do something some or all of the time are deemed less efficient, and therefore unprofessional.
So there’s this conflation, right? If you are acting badly, that’s unprofessional. If you are disabled, that’s unprofessional. Disability must be bad.
And on the other side of it, the ethical part allows people to feel they are doing a good deed by enacting ableism. It’s just calling out unprofessional behavior!