accessibility != for the disabled, and apple used to champion that principle.
What's good for someone with eyesight problems is also good for a young person standing outside under the sun's glare. What's useful for a one-handed person will also serve you when you're carrying your toddler in one hand. A silence compartment on a train might make you effectively deaf for a while, a hangover or a night of bad sleep might make your attention sink, and so on.
We're all somewhere on the spectrum, and most importantly, where in the spectrum we are changes frequently during the day. That's why it's so important for all interfaces to be accessible by default rather than having a buried switch somewhere.
