Oppo, Vivo, Realme and OnePlus are all under the same parent company, BBK Electronics (步步高電子). Together, they equal Huawei's (together with its sub-brand, Honor) 40% of the Chinese smartphone market. So, they would have the motivation and certainly, the resources to develop their own in-house chipset. But as we can see, "designing" one's own chipset is just one rung of the whole telecommunications ladder. Nevertheless, this is the right step forward for any Chinese entity that is serious in their ambition to be the best.
Interesting bits highlighted in bold. And one part containing some nice polite talk about how "Qualcomm and MediaTek were still partners..."
I think the author is over thinking on Huawei's inability to use Quallcomm's chips.The Kirin chips are every bit as good as their Quallcomm's counterparts.
Another article on this news.