Likewise you cannot run Wayland programs on X11 without a wayland compositor like Cage (a wayland kiosk) or Weston. Both run as a window on X11 inside of which Waydroid works just fine.
It's an odd complaint that incompatible software is incompatible.
"Users who don't know about the feature can just use a pre-configured system like Mint Cinnamon and never know about any of these things."
Windows will run at least basic OpenGL and DirectX in software if you don't have hardware to accelerate that, and those software renderers are included as part of the OS. It'll run like garbage, but it will run.
https://learn.microsoft.com/en-us/windows/win32/direct3darti...
Waydroid compleatly fails in comparison, while giving you no pointers on what the problem might be or how to solve it unless you're already a Linux power user.