If Ford and GMC cars/trucks can go for as long as 5, or 8 years, or close to 100,000 miles with less problems then they should, trust me, all the surveys would be focusing on 5, 8 or 100,000 miles.
The fact is, focusing on the first 3 years is the only way Ford and GMC can get a "sucky" score in a survey instead of being rated "un-useable and should be burnt on the spot."