I think the prime minister should take the opportunity (Monday) to make it clear Canadian airspace and landing sites would be available if there is any need,
Even if you set aside the need for valid code, it is ridiculously easy to find non-government sites that flunk even the simplest and most canonical requirements of the Web Content Accessibility Guidelines, like using alt texts for images.
In any event, accessibility is almost as poorly-known now as it was 2.5 years ago when I started work on my book. That's because most 'Web' developers aren't making Web sites at all, since they don't have a clue what valid HTML and CSS means.