You seem quite angry about this as if him being a coach of this team is affecting your life.
As for the question "How the hell did he even get an opportunity in league"? Most of NFL and College hiring is based on relationships. People tend to want to work with those they feel comfortable with, know personally, or have someone recommend them. Burke most likely followed a career many coaches take or working at a lower level in an organization, QCC is typically where many starts and moved up from there. His opportunities may have come from being an effective position coach and knowing the right people. He got his opportunity to be a coordinator and unfortunately has not been good at it.
Right now the team is 6-6. I see thing written on the offense being trash, the defense being trash, the roster is trash...how the hell did we win 6 games? Is is good coaching? Or is it the fact that football goes beyond stats and winning is based on the opportunities presented.