Generally Curious

What happened to old model of madden? It felt really smooth and I didn’t think it needed to be completely gutted just to make a new version that isn’t as smooth. Madden 08 felt great with player movement and they continued to update and develop the career modes from previous games. It was a complete game every time. Now it just feels like they rush a product that is always bugged and requires constant updates just to improve big fixes. Any particular reason behind this that anyone knows of?