I'm not a Harbaugh fan.
His in game decisions and decisions about play-calling are questionable. It's the same thing every year with him. He had the one run with Flacco, but he gets outcoached a LOT.
I can see the argument for the Steelers parting ways with Tomlin, but he hasn't had a top tier QB in about a decade. Harbaugh has had a future HOF QB, great defenses, and a future HOF HB this year. He gets too many passes that other coaches don't get.