This is not only applied to Apple's software. The entire software and hardware market including iPhone, Samsung Galaxy, Windows, etc. is pressured to release new products with more and more features every year, advertising those new features to facilitate sales. The result is, what was once a simple and cool product has become heavily bloated with unneccessary features.
The Nero Burning ROM/ACDSee disease is how I like to call that. These were simple once too but quickly degraded on quality, got bloated with stuff nobody ask in the first place