So why is the Steeler's field so bad?

I guess its just complete garbage and its a known fact. How does that happen with a franchise like Pittsburgh? I saw some pics of it, its like dried out...thin layers of dried grass/sod just slipped under their feet for most of the game. A league worth billions of dollars and its like their main product, the players, they couldn't give a shit about. Rodgers said it was 'borderline unplayable'. I understand that these stadiums get used for a lot of other things besides football, but c'mon now.