I don't think every truck has it as bad. I drove 4 trucks between 2 dealers and took one truck home over night even. One of the trucks had no issues. I felt the other 3 trucks had a vagueness and sloppy throttle response.
I have a 17' with adjustable pedals. Sadly mine had the crappiest feeling gas pedal of them all. I used cut a 2.5" piece off of a paint stick and slid it behind the plastic base and metal floor. It was a bit discerning that it kind of went all in and disappeared back there. The results? WOW night and day! Dare I say that my throttle is almost too sensitive. A little press with the foot goes a long way. Immediate acceleration when I press the pedal.
This is a must do IMO. The mushy non responsible throttle was a huge black eye to my truck, making it less enjoyable to me. I did this mod after reading about it here. I only had 300 miles on her and couldn't take it no more. The truck feels faster and peppier with the quicker throttle response.