Windows, on the other hand, has changed significantly. Sure, it runs 32-bit programs, but the interface difference between 7 and 10 is ginormous.
Linux, as much as I love it, is probably the worst offender. At one point we had GNOME and KDE as dominant desktop environments, and then we had Unity, GNOME 3, Cinnamon, MATE, etc. Now after years of forcing Unity on everyone, Ubuntu has switched to GNOME except now GNOME is in a worse state than it was back in GNOME 2. Most distros are still using X11, graphics card support is lousy, and horizontal display tearing is still a problem that every commercial OS has 100% solved.
macOS has at least remained fairly consistent compared to all the other competition.