My boyfriend has ADHD and he can comprehend social cues. Educate them don't baby them. He’s learned that people don’t like it when you interrupt them he knew that way before I met him. They can learn, it may impact learning, but it does not make them incompetent. Someone’s mental state is an explanation, not an excuse. And yes, you may not have said that because they have ADHD that they should be excused to be rude, but it was implied with your comment.
I’m not trying to say excuse it but rather understand them. Yes your bf has adhd and some may be like him some may not. Keep in mind the symptoms for adhd vary for each person as well as how much they’re expressed. It’s not just how adhd impacts learning but the fact that their brain is noticeably different compared to those without especially with studies indicating that those with adhd in the same age group will have a noticeable cognitive deficit compared to those with light/no symptoms of it
You have a very either or mindset on what I said prior interpreting it however you want and using that to support the reason for even commenting but keep in mind everyone is different and has trouble with certain aspects. I’m sure there are certain parts of your life that you’re not proud/has issues. Rather than judge and have a closed mind you should be patient.
I understand your perspective, but even if they have more of a severe case of ADHD if you work with them, they can still learn to not do those things that may be considered rude now yes in certain cases there may end up being to be exceptions for certain things, and sometimes some people just aren't meant to be roommates or friends also, I'm not understanding what you mean by I haven't either or mindset