A Citizen Lab analysis of Chinese social networking app WeChat has entirely missed the point by over indexing on the app’s privacy policy. WeChat is a ubiquitous, surveillance-friendly application that provides the PRC with unfettered access to its users' messages. Fiddling with its privacy policy won't fix that.
WeChat's domestic Chinese version, WeiXin, is what is known as a "super-app". Primarily a messaging app, it also serves as a major financial transaction platform and can run "Mini Programs", WeChat's equivalent of apps from an app store. These Mini Programs cover the entire spectrum from ecommerce, health, gaming, and also include government service apps such as COVID-19 contact tracing apps that were compulsory during the pandemic.
WeChat's international version isn't so all-encompassing, but it does contain many similar features. Tencent, the company behind WeChat, separates the international (WeChat) and domestic version of the app (Weixin) into two "services" run by separate subsidiaries in Singapore and Shenzhen respectively. WeChat considers the mainland Chinese version, Weixin, to be a "third party". So, funnily enough, it has a completely different privacy policy.