There are no macOS or Windows subdistros. So, the only difference may be between different versions. Adding to that, Apple generally does not have the tendency to replace/rewrite macOS subsystems every few years, so it is much more likely that thing still work after a couple of years.

That's a pretty naive trust in Microsoft's branding/marketing team. Of course there are heaps of different Windows distributions. They don't necessarily differ as much as, say, Ubuntu vs Gentoo, but they do differ.