That's fine but that doesn't make you "right".
Caveat emptor governs much of the commerce in the US; Let the buyer beware.
If they outright lied to you that's a different matter.
Since roughly 90% or more (just a guess)of the driving public never encounters those conditions, I doubt that any court would require Ford or any other company to emphasize that requirement in their sales information.
If you REALLY do that much driving in "chains required" areas, I think it is just common sense that you would ask BEFORE you buy.
When buying a new vehicle most of us made assumptions based on what our prior knowledge of cars happened to be. That is where this FFH can fool you, it doesn't work like most.
We have many people that come here to research the FFH before they purchase one, they may not know how to find a Owner's Manual online.
Since the introduction of the 2013 FFH I don't recall that the snow chain question has come up on this Forum.
Your assumption that 90% of the driving public doesn't encounter snow chain winter conditions doesn't quite hold up to the facts.
There are only 7 States that don't have snow chain laws, Florida is one of them.
There are 14 States that have snow chain laws that may require their use when the highway authority deems the roads unsafe without them. Chain up or park your car.
AZ, CA, CO, ID, MD, MT, NY, OR, PA, SD, UT, VA, WA and WY hold a lot of people and all of them are subject to the mandatory chain laws, when encountered.
I doubt that every person that buys a car in those states remembers to ask if the FFH can use chains.
Making a comment that another member didn't use common sense when they bought their car is not helpful.
Waldo, our Ford Rep asked the Ford Hybrid expert about this and his comment was: "Traction aid devices are not approved for use on this vehicle because the Hybrid powertrain cannot accommodate the additional strain introduced by these types of devices." If you can't trust the 'Hybrid Expert', who can you trust??
Anyway, it has already been shown that Fusions with 17" wheels can use 'traction devices' just fine.