i don't think the number of plugs is the main issue. It's the low power, meaning it will take several houes instead of less than one...Today's Supercharger opening in France : Chambery.
And yes : it has only two plugs. Anyone who consider this suboptimal might consider avoiding using it. The others have access to the most famous ski resorts in France (les trois vallées : Courchevel, Méribel, Les Menuires, Val Thorens ; La Plagne ; Tignes ;Val d'Isère etc.).