It really shows that you know nothing about sleep-related disabilities. I know someone suffering from idiopathic hypersomnia[1]. You can't just "choose" to go to bed earlier to wake up earlier in the morning. Sometimes it might work, most of the time it doesn't.
You think it's the disabled person's responsibility to never put a burden on others when others' expectations puts an unreasonable amount of burdens.
And we're talking about this specific kind of disability, but as someone else said in a sibling comment, it could be anything. Imagine you really have to go to the bathroom for some reason (pregnancy, diarrhea, ...). That can happen to a lot of people. Should all of them be prevented from being accepted into class ?
That's why we speak about "empathy, tolerance, flexibility". Empathy towards the weaker few, not empathy towards the "normal" many.
[1]: https://www.mayoclinic.org/diseases-conditions/hypersomnia/s...
FWIW I agree but I think it’s worth communicating a devils advocate position.
I don’t think anyone here is disagreeing that those with a disability should be protected. The distinction is that many don’t go so far as to assume someone has a disability when their behavior is maladaptive. In game theory, systems break down when they are too many people abusing the system. Giving everyone a break on all instances just in case they have a disability sets the table for creating an unstable system ripe for abuse.
You point out the specific case of sleep disorders. But the numbers of medical disorders is functionally infinite. If we apply the same rule across the board, we would be creating a world where nobody is held accountable because they might just have some obscure illness they aren’t aware of.
I think there are better approaches that don’t devolve like that. As another congener said, you can create a system where late-comers can quietly come in the back.