Type F or Dexron, why do some HP guys dislike type F

ive ran type f in my 95 half ton 2wd truck for oh 120k+ miles now... no slipping no leaking no funny smells, unless you count the fomoco friction modifier i dumped in too. other than that i use whatever i have at my dispose. yeah when i rebuild my trans i get new steels so i really dont care how much they get worn.