I don't think one specific truck from the 2009-2011 era rusts more than any other. I have heard of Japanese trucks rusting fast because of our harsh winter and salt roads but I think the trucks you are seeing have been maintained poorly.
Rust proofing can help, as well as washing all that salt off the bottom of your truck. Making sure water isn't sitting in the door jams and your weather stripping is in good shape will help also.
Sometimes rust can be an easy fix too! Our article here: https://wheelscene.com/how-to-fix-rust-on-a-car/ talks about rust. Maybe you will save some money and have a weekend project!