Canvas main menu under right mouse button?

Can you make actual main menu in Canvas window? Even GIMP has finished with this nonsense called “Yup, image has main window, but it is only available when you use RMB”. Yes, it still is under RMB in GIMP, but now images have also actual main menu.

It does, but only when you click on an unoccupied spot on the canvas.
I agree that it should be accessible at all times.