I think you're missing the point and the reason for the appeal of wechat. In China it's much more than just a messaging platform, and reality is most people don't care about notification standards and such.

I've used wechat expensively in China and I wish there was something like that in the US. Wechat just makes it so much easier to do somethings and has a nice integration with life. Some examples outside of messaging:

- payments obvious, but also ability to send money, split bills etc.

- Orders things. Either in person at restaurants, delivery or a ride

- The social media aspect. A lot of events, tickets etc are sent via wechat.