France is preparing for the battle against Germany wich has a double as large population. Plus they have a relatively planned ecomomy, so I think they're already in a pretty mobilized state.
It just seems stupid to give a bonus out of the blue without any drawbacks which other countries can't get just because they're not socialists/syndicalists.
In OTL the USSR was a pretty mobilized state too with women in the military and they didn't have economic penalties for that. Why France should have it? And Britain? And Sicily? And Bengal? And Mexico? And Center America? And Georgia?
Give the other countries their own bonuses.
PS: The Center America has been reworked? The last time I saw it the only chance to happen with an event of Honduras, and when you play has Center America, this sucks.