I'm a part time wheelchair user with some walking ability and there are a lot of spaces in my city that are too inaccessible for me to use. I don't mean internal space, I mean the built environment of the city itself. There's one route which, if I'm walking, is 0.2 miles. If I'm in my wheelchair, it's just under 0.6 because I have to take a weird route that doubles back on myself, because city designers put little ledges everywhere without considering how mobility aid users can be impacted

Of course you're right to highlight that a properly supportive and inclusive world requires more components than just modifications to the built environment, but I think that making accessible spaces needs to be in people's minds from the get go, and that "some people can't walk three minutes" is a useful idea for this.