the problems with mds and afm usually show up when the warranty period is up. it IS an issue with these trucks. ford has there own set of problems with timming components failing and cam phasers. watch some youtube and see for yourself.
"When the warranty period is up". We have a reasonable number of RAM 1500 half tons in our fleet at work, we only recently had our first lifter failure on a 2011 with almost 300,000km on it (~190,000 miles). These trucks are LONG out of warranty and have been extremely reliable. There are others in the fleet with higher mileage, no issues.
Confirmation bias by Youtube is hardly a credible metric for gauging the real life scope of a problem.