I can’t take this advice too seriously if you really think GNOME3 is more polished than Windows or macOS. Both of the latter have gotten worse over the years undoubtedly but GNOME3 is fundamentally flawed and bad.

Care to elaborate on what makes GNOME "fundamentally flawed and bad?" I used to dual boot, and every time I was running Windows I thought the UI was terrible compared to GNOME. Windows has a very inconsistent UI these days, partly because Microsoft keeps changing the most visible parts of it, but completely ignores system utilities that still use XP-era icons.