Nobody mandated the author to order delivery, follow social media, buy movie tickets, do online shopping, pay rent, use bikeshare, call cabs, etc, etc, etc. through WeChat. They are, for the most part, services owned by companies other than Tencent. WeChat just compiles a giant menu for users to link their accounts from these services into WeChat. These gateways exist because consumers find it more convenient than quitting WeChat and opening another app/website.
It's perfectly healthy to be concerned about the impact of centralized tech giants on our daily lives but so far all I'm seeing is fearmongering about this ever-more-elusive "dystopia" which coincidentally seems to only exist in a place that's easy for the English-speaking world to hate on.