I think more specifically, the sentence before:
"As it becomes more powerful and self-contained, Chinese phone consumers will stop asking what phone and operating system they should buy, and start contemplating what phone best runs WeChat."
"As it becomes more powerful and self-contained, Chinese phone consumers will stop asking what phone and operating system they should buy, and start contemplating what phone best runs WeChat."
The real takeaway is "That's a long-term threat to iOS and Android, as well as any company that makes phones to run them"