Everyone should get blame. Over the course of an entire game there are always particular plays that stand out that might just go down in the box score as an incomplete pass for instance. But if that incomplete pass is a simple throw that should have been a touchdown its worth way more than just 0-1. The Qb can complete 80 percent of his passes, but if he has 1 or 2 really bad incompletions that would have iced the game, he deserves blame.