Mesh networks have existed before Bitcoin, and even some people tried to monetize them and somehow incentivize people to "share their bandwidth" (ie. Fonera, etc).
Calling it "6g" or "PoW killer" isn't going to make this old idea any more interesting to anyone. And now Elon Musk is covering the world with 20ms latency links with a mesh of low altitude satellites interlinked at the speed of light in a vacuum (as opposed to slower fiber optic trans-oceanic cables).
5g also has a mesh like function, mostly to the benefit of the mobile carriers.
Sure, but I think the protocols have not been so good earlier. A more advanced mesh is a mobile mesh. It think most mesh protocols so far have been static and that is one thing that has hindered the enthusiasm. 6G is an existing technology. Sure I admit I call it "PoW killer" just to add some shock value to my presentation. lol I'm sure you don't really mind since you are so confident about this Chinese PoW.