I remember a popular Pittsburgh Steelers forum that had a thread stickeyed to the top of the front page called FIRE BRUCE ARIANS IMMEDIATELY. The thread name was promptly changed to FIRE TODD HALEY IMMEDIATELY. Not when he called his first play. Not when he made his first mistake. When he was first hired.
It was in jest of course, but there is almost always grain of truth in every humorous quip. And the plain old truth is that nobody—at least, no fanbase broadly speaking—likes the offensive coordinator. It is always their fault. It’s just something that comes with the territory, whether at this level, in college, or in a peewee league.