'Never' is not the same thing as 'have never'. It is, or course, possible that my TC could die tomorrow. Or, I could sell the car ten years down the road never having had any transmission problems at all. I do not know which way it will go, but like WDNITRO, I think it is very easy to complain too much about these cars. In general a sports sedan will get driven like one, and that means hard. Any car driven hard will have more things go wrong than cars that are driven gently or even normally.
As per the number of cars that have actually had the cam poblem, the documented number is under 200 at this point in time. It is very possible that more than that have, and it is even possible that it might be 10 times that number, but there is -no- proof of that, just guesses. At the moment the documented failure rate of the cam sprocket is less than 1%.
And, as Bob noted, no, the various other Taurus models do not have the same transmission as the SHO. The AX4N, from what I have read, has major differences from the AX4S.
pax, smn