Because that was one of the unsaid conditions of the MVP, and it was best exemplified in the years of Dirk and Nash. Best player on one of the best teams. Now these folks realize that. Laughing at them in a condescending manner is uncalled for, especially if you have no idea if these are the same people who were "whining and moaning" years ago.
Of COURSE that is the unsaid conditions of MVP. Laker fans COMPLAINED about this unsaid condition when Kobe was passed up while I defended this stipulation.
I still stand by that MVP = best player on a top 3 team. Kobe is my MVP 6-7 games into the season. I'm not a hypocrite. If the Lakers have the best record and Kobe ends up averaging 20/5/5, he's still the MVP regardless of what LeBron average if LeBron's team is nowhere near top 5.