I agree with wonky's point that it's not just the designers to blame for not-fit-for-purpose spaces and premises. Apologies if I seemed to suggest this. I agree that corners often get cut, particularly when there are pressures on budget. And, of course you can get commissioners who think they know best, overriding advice from the people they pay to tell them how to get it right!
Changes in the law, particularly related to disability access standards, have meant that those who don't see a problem (because they don't have the experience of living with a disability) are forced to do things in a different way to comply. That doesn't meant hey don't still try and cut back, or take the advice of those who recommend doing the very least.
Also, there can be competing priorities and tensions. It's not easy to square needing public spaces to be well lit to improve the sense of personal safety and reduce the risk of tripping, falling, etc., with the need to reduce the carbon footprint and cut energy costs.
Leithlurker - I don't think the height of installation can be put down to tall men doing the job. It's my understanding that carpenters, electricians, etc., aren't generally given carteblanche to put things wherever they fancy. They put things in accordance with the design specification.
Yes, there are more women in architecture, town planning and the building trades, but they are still a small minority within what remain white, male, non-disabled dominated industries. Even when they are there, they rarely occupy many of the senior, most influential positions. As is often the case with male-dominated fields, the handful of women can come under considerable pressure to conform to the established "culture" to avoid being harassed and marginalised even further.
Finally, I would actually suggest that "having a disability in terms of access," isn't automatically gender neutral. For example, a disabled woman might be pregnant and find it challenging to stand for long periods, need more frequent access to toileting facilities, etc., than a man with the same type of disability. A disabled woman is more at risk of sexual harassment or a sexual assault than a disabled man. Yes, some things will be the same, but I don't think it's ever safe to assume that "all things are equal," as a rule.