And all of those things are subsystems underpinning the core of the game to provide a different flavour to the same game. In every scenario: You build a thing, and people interact with it. Just think about which bits of this game the devs started building first to get a feel for what the core of the game is.
Unless you believe those things are more important to the game than the worlds and the building? In which case, why does creative even exist? If it’s so different, why isn’t it a completely separate standalone game?