This has been a routine scapegoat around here for years, and is popular at other universities, too. People like to ignore the less glamorous parts of the team (i.e. of the offensive line) while paying far too much attention to what the quarterback does. Part of that is the nature of the position but also the average fan's football knowledge - it's often easier to tell when a quarterback does something wrong over other positions, especially in the moment.
Frankly judging someones football knowledge based on a post is ridiculous. Yes, a bad quarterback can create more losses just as much as a great quarterback can generate more wins on a mediocre team. You won't find a sports analyst, coach, AD ...etc that wouldn't agree with that statement.