You seem to be honestly telling us the laws should be written so the MSimon's of the world have no advantage from their ability to learn, and that you actually do think it is silly to try to learn all you can about a condition you have, so you can act as something other than a rubber stamp for the doctor.
I did nowhere say that. He will always have an advantage. However, you can not expect the average person to be so smart. Heck in the US your laws are taking this much further than we do. In Austria, people are expected to have a certain level of base intelligence and understanding.
E.g. you are expected to understand that you must not leave the steering wheel of your camper while driving, even if there is no warning on it. You are expected to understand that the kickstand of your bike is meant to be up while driving, even if it does not say so on the darn thing. You are expected to know that coffee is hot, because it has to be boiled in order to make it. A country where parents dont let their neighbours children play with their children in their backyards out of fear one of them might fall over a root, or a mole hill and they will get sued.
In the US, the individual is, by law, not expected to know anything or to have any kind of self accountability. Yet you want me to go all the way to the other extreme and have the laws changed for the few Msimons on the US that might, or might not be geniuses and are able to learn everything they need to know about any illness in a matter of hours, instead of years as it takes a doctor. So that they have an advantage over everybody else.
Btw, the examples above are all court cases that were the result of these people having medical bills to pay (their own and/or someone elses) that they could not. How much less needless courtcases (and needless warning stickers or warning signs) would there be in the US with everyone having health insurance?