Eh, no. My experience working in web accessibility, it seems most visually impaired individuals have a preference for windows, seemingly because it has the most mature set of accessibility/screen reader tools around largely because of how long windows has been around and how much of a requirement it is for enterprise environments.
As far as I know, accessibility has been built into macOS since the early days, and with great care. Which then propagated to application built for macOS, and later on, iOS. iOS is rather magnificent for (visually) impaired people.
In contrast, Windows has had its accessibility features bolted on, and the best ones are third-party which makes it even more bolted-on. And then you have twenty different frameworks to make Windows applications, all with varying (but usually mediocre) levels of accessibility support built in.
