Windows has fantastic accessibility properties/support. They even have a blind dev working on Visual Studio (or did)[0] for awhile. Apple's accessibility options are not anywhere near on-par with Windows. Linux ... I honestly haven't ever tried a screen reader in Linux and I have a feeling it is 100% up to whichever dev implemented something with no centralized style of doing things.

[0] https://www.youtube.com/watch?v=94swlF55tVc