Aside from the terrible brake rotors, disposable power window motors, HVAC drain that repeatedly clogs and destroys a $450 blower motor, rusting control arms, bad airbags, questionable wheel bearings, rear power liftgate that destroys itself, and all the other minor but annoying crap that has gone wrong with mine, I agree, it's all Ford's fault.
Seriously, though, it's hard to figure out what the failure rate is on these engines due to the water pumps. Is it 1% of all engines or 0.1%, or 0.01%? I have no idea. It is not hard to find forum posts on the Edge, MKZ, and other forums talking about this issue, but Ford and Mazda put this engine in a lot of vehicles.