I agree completely. As a monarchist, I'll never forgive Wilson for destroying the German and Austro-Hungarian Empires. The removal of the Hohenzollerns and Hapsburgs surely paved the way for the rise of Hitler as you suggest.
France would be eliminated as an independent country
It's the French Republic that needs to be eliminated. As long as there are those who hope and pray for a restoration of the monarchy, the true spirit of France will never die.
The Islamic problem also has its roots in the defeat of the central powers the Saud family and Wahabbi cult would long ago have been wiped out by Ataturk's firing squads if the Ottoman Empire had stayed intact.