I would suggest that you attempt to close your eyes and get through an airport and see what happens.
In a lot of older airports and a lot of older spaces, there are all sorts of barriers and things that make it very difficult for somebody who's blind or partially sighted. There's dim lighting for those who have partial sight or low vision, and a lack of tactile indicators. There are echoing sound spaces that are very disorienting; there's no Braille and there are no tactile markings in any way to figure out where you are. I could go on forever.
There are so many ways that we could make it better.