Having a problem, like springs breaking prematurely would make me think the problem is one of two things…
Either the spring isn’t properly fit to the car, as far as weight and such,
OR
The steel used to build the springs is of very low quality, which would severely weaken the steel.
I’m not sure what would happen if a spring broke while driving, but I’m SURE it could potentially cause serious damage to the vehicle, and/or to the passengers.
I definitely think Ford should man up and add this problem to a recall list.