I expect that using a screen reader and a blindfold would take some considerable time to get effective at, even for accessible sites.

As for the sites I am responsible for, I try to make them accessible by reading and applying the guidelines, but I do appreciate feedback from blind people on ways to improve it for them.

That would be stupid for most sites - only a small minority of customers are blind and it isn't worth changing the entire site for them (unless you are amazon or you get it for free by using standard HTML things like links, buttons, etc).

And before you scream ADA, that is a) nationalistic (not all web developers are in the US) b) usually something that can be worked around - e.g. put your phone number on the site as an alternative.

Accomodating people with disabilities is an ethical issue, not a numbers game.

> I don't know the answer to your question but it should be a required exercise for every web developer to use their website with a screen reader and a blindfold. It would change the way they/we build websites.

Really ? Are you going to ask every developer as well to try to use a website by binding their arms as well, to see how mutilated people feel about the navigation ?

There are good cases for adapting designs to make it usable to most people, and there are good cases as well where the people with disabilities need to have tools to access what's not made for them in the first place.