Why is it abelist? Dd is a very competent young adult. Intelligent, articulate, social, interesting. She can do much more than she has done the last 2 years, but when she doesn't fancy something hides behind her dx.
For instance, I ask that she does something domestic at home like clean the bathroom. Invariably it takes her all day because she is either 'overwhelmed, exhausted, can't focus, feels dizzy/anxious'. However if one of her mates calls to go out somewhere all of a sudden she is fine. At uni she had a module she loved. All work handed in on time, high marks etc. Modules she didn't enjoy, assessments handed in late, lower marks. Seminars she enjoyed she turned up for, ones she didn't she went once and never again.
I completely understand that she deals with unpleasant things differently due to her dx, but she is far from being incapable. Things are more difficult for her, but not impossible as she claims. If she was as hindered by her dx as she claims she is, she would be hindered for everything. No one enjoys doing things they don't enjoy. But unfortunately everyone had to do shit they don't want to do.
And it is people cherry picking how their dx affects them that makes people eye roll about it. I saw it with the students on my degree course, I see it with dd. Dd had an absolutely horrendously bad experience at uni, for various reasons and was unsupported with her dx. But she could have done more to help herself in many ways. She can't help being dyslexic for instance. But didn't even try the various tools now available to help dyslexia. She has auditory processing and struggled to take things in so just stopped attending lectures. If she had attended and then used the lecture recording she could have taken more in. She was very capable of writing decent essays, but chose to use energy to socialise then was complaining she was too tired to work.
A dx is not a sick note, it is a way for people to get help, but also understand how best to help themselves. If you know that as a person with adhd you are going to struggle to focus for 4 hours, then make sure you leave time to do smaller chunks. If you know you have 3 essays due in 6 weeks and won't be able to do them all in the last week because of your dx then split them up. Instead dd, and other students I have observed, seem almost surprised they still have to do the same amount of work as a NT student.
It's that assumption that their 'specialness' is a get out of jail free card. Support doesn't mean supporting them to not do something that needs to be done. Support should be helping them do what everyone else needs to do, even if the way they do it is slightly different.