Earlier quoted context omitted.
I’m all for empathy, tolerance, and flexibility (to a reasonable degree). I also don’t think it’s reasonable to expect a professor to act on an assumption of illness when the person actually experiencing the symptoms does not hold that assumption. Your perspective makes it seem like the prof is privy to information about your health that you don’t have.
I'd go a step further.. The prof was expressing empathy for the students that made the effort to be on time. They made it. If you know you're late all the time, then make allowances. 8 hours not enough sleep, go to bed earlier. 1 hour not enough time to wake up, set your alarm to give you 2 hours. This isn't related to knowing you're sick, just knowing you're late often. It always makes me wonder when I hear "empathy…
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...