I think that all of this is good stuff and enjoyed reading the article. It is very true that pretty much everything has been arranged for the convenience of "default man" who is able-bodied, tallish, and unencumbered.
It is true that cities, towns etc are for all of us and need to consider the different needs of the different people using them in different ways - teh elderly, pregnant women and parents with little kids, pushchairs, people with disabilities, people who are more wary of unlit streets etc.
It reminds me of the crash test dummies all being male, with only some female ones in the passenger seat (I think it was) and the % of injuries being so so much higher for women in collisions than men. This stuff is not trivial.
Another one is public transport - I'm hardly short at 5'3 but I can't reach the handrails!
So I'm in favour of this and while you always get the macho types saying "pregnancy isn't a disability! wear 3 slings! my granny was running marathons in the dark at 86! " etc etc I think it is good to give this stuff consideration to end up with space that we share that is as suitable as possible for everyone and doesn't leave people dropping away from going out etc as it's a hostile experience.
More greenery and so on is good for people too 