In the allied victory over Germany by 1918 how important was the collapse of the Germany home front?

The German home front did not collapse in 1918. In fact the German home front did not know or understand how or why Germany lost the war and signing a peace armistice. The German population thought that they were winning the war. They did not know that their two allies: Austria-Hungary & Turkey were on the verge of defeat. They did not know that the German army had just recently been defeated and was retreating in France.