Some people do just fine, sleeping less. The issue is not listening to your body and waking when you don't want to.
I mean... the oddities that led him to be diagnosed included things like lack of eye contact and bizarre play habits. But, honestly, these are rather unimportant in the grand scheme of things, because the 'normies' were missing pretty fundamental, yet non-diagnosable, personality traits, such as ambition and conscientiousness
What society wants and signals to you constantly is for you to kill yourself because you're not worth anything.
It sucks to say the least.
Along with hyperfocus, a tendency toward honesty is another such trait. "But people without autism are sometimes honest, too" would be a comparable response.