I shouldn’t have to explain common sense. The very purpose of planned obsolescence is to make it obvious that the device has slowed down. The constant stutters on the 7 Plus irritate me and egg me to buy a newer device.
It’s not a meme. Ask any Android user about why they buy $960 phones when they have inferior update support and they will tell you planned obsolescence with iPhones is one of the reasons.
http://www.investopedia.com/terms/p/planned_obsolescence.asp
Planned obsolescence is a purposefully implemented strategy that ensures the current version of a given product will become out-of-date or useless within a known time period.
This guarantees that consumers will demand replacements in the future, thus naturally supporting demand. In some instances, this can even motivate multiple sales of the same object to the same consumer. Obsolescence can be achieved through introduction of a superior replacement or a product design meant to cease proper function within a specific window, or by cultivating desirability of new versions over older ones.