That page was way more accessable than plenty of sites I have seen. I mean content shows up even if you don't have Javascript enabled or Flash installed. That alone puts it way ahead of a huge number of websites.
Good accessible design has benefits for everyone, not only the disabled. For instance, that half of the web breaks when you turn off JavaScript, turned into a security issue when Tor Browser enabled it by default (to not confuse their users with a broken web).
Progressive enhancement and accessibility go hand-in-hand. If not for accessibility reasons, then develop websites with accessible JavaScript for security, SEO/automated access, or progressive enhancement reasons.