Does Seasons mark the beginning of story progression?

I loved the story progression feature. You would see what other sim's lives were going wiht out you interfering. It gave more life to the world around the sims I was controlling because there was always something happening.

In TS4 you just see sims playing with the gameplay objects or walking into random spots or doing scripted things. Like everytime we go into a CL nighborhood there has to be someone playing a guitar. The sim didn't actually had a guitar on it's inventory and decided to play it.