Apple switched a year before required, and not coincidentally, ten years after promising that Lightning would be the connector “for the next decade” so as to reduce fears from those who were angry about being “forced” to replace their 30-pin peripherals.
I don’t know why tech enthusiasts tend toward conspiratorial thinking, but certainly if Apple had obsoleted Lightning after only 8 years, many of these same people would be professing outrage and demanding class action lawsuits over such a greedy deceit.