Different sports. Most SHW lifters(in PL and OL) I know don't care at all about meal quality, it's all about piling on the bodyweight and the weight on the bar. Pizza, Little Debbies, etc.... are the quickest, cheapest, and funnest means to an end.
Even the leanest leanest lifters aren't are prissy about their eating, They just get enough protein and let the drugs and the training handle the rest.