It appears that this article is confusing Qualcomm's Krait architecture with Kryo:
"Qualcomm did the same up to 2016 with the Kryo architecture."
That timing is very much wrong.
"[Krait] was introduced in 2012 as a successor to the Scorpion CPU and although it has architectural similarities, Krait is not a Cortex-A15 core, but it was designed in-house.[1] In 2015, Krait was superseded by the 64-bit Kryo architecture, first introduced in Snapdragon 820 SoC."