I can kinda understand Autism, to an extent. Certain forms of high-functioning autism - like the one I have - are more akin to mild learning disorders. Deliberate practice and effort can mitigate a great deal of the issues.
On the other side, I've seen people with more extreme forms of the condition and I can't imagine having to deal with that. I know I can be difficult to deal with and I work really hard to try to mitigate my shortcomings with others - especially people who don't know me well - but I pale in comparison to the difficulty of people with more extreme forms of Autism.
In this way, I think ADHD and Autism are probably similar - there's a spectrum of impact the condition has. The milder forms of the condition may actually feel like a superpower to those that shape themselves to utilize their quirks in their favor. The problem arises when all forms of the condition are considered beneficial when they are demonstrably not.
Hell, even I have problems that no amount of learning can ever overcome. You can't exactly teach yourself how to pick up on the subconscious body language queues that most people just know inherently. I'm totally blind to that stuff and it makes intense conversations incredibly difficult and a little terrifying.