The CS understanding of "No class, no state" is just about at the edge of something Aphex Twin might care about. But the stylized A really isn't that similar to a Lambda
Are you asking if people with Down's syndrome are unique people with unique experiences and personalities? Because I hope you'd pretty quickly arrive at "yes, of course people with Down's syndrome are unique people with unique experiences".
I think a more generous reading of their comment would be: do people with Down's syndrome vary significantly in terms of their Down's syndrome symptoms? Or: do they vary significantly in how they experience their symptoms? I don't have enough experience with Down's syndrome to answer either – I've only met a few such people in passing – but would be interested in knowing the answer.
Edit: I feel I should note that, given the phrasing of the comment, I think your interpretation is closer to the original intent – or at least, a clearer reading of what was said – but I wanted to add this in the interest of taking the strongest interpretation of their comment (and to satisfy my personal curiosity).
Gambling ads are banned in my country but we get bombarded by them on YouTube. Me and a bunch of people I've talked to have reported them many times but nothing happens.