Jam,
I too was surprised at what you reported and have further explained vs what the dealer did to take care of it.
My f150 (2015) had the Ford hard downshift, I think it was 3-2, and it was all over the forum (F150). To their credit the dealer reflashed it using the tsb info I gave them.
Just don't think that Fords don't have a myriad of issues and before you buy a 5.0, make sure they have fixed the oil consumption issue thats been documented, unless you want a new short block from them later. While a majority of 2018 5.0’s dont have to get new blocks, quite a few have.
Or look at all the hassles GM owners have in their 2014-16 trucks with shaking and vibration. YT has several vids on it. Its been called the Chevy shake.
From Autoguide.com, begin quote:
“While SUV owners complain of buffeting causing headaches and dizziness, GM half-ton owners claim there is an insistent vibration in their trucks. “While driving at speeds above 45 mph, there is a vibration from the rear of the vehicle,” reads a complaint on the NHTSA database.
End of quote
Just sayin the competition has just as many if not more problems... look at the overall truck and then decide.
Oh and give your dealer props for taking good care of you. The tech must have stumbled on something and that likely saved you from a breakdown.