The chinese miners are not controlling it, but they are definitely influencing many people involved. Honestly in my opinion we should move back to a gpu centric algo and recentralize it. Maybe a very memory intensive algo so asics would be hard to develop for.
Correct, China could never touch the bitcoin network because it was made to be decentralize, and no one could change it, excpet Satoshi Nakamoto. Also, since most of the miners are from China, then that is why they can easily manipulate the bitcoins price by dumping it, taht is why most of us are thinking that they are the one who is Controlling it, but the truth is they are not. That is the only thing they could do about bitcoin, and if they want to surpass bitcoin, then they have to make a new coin which can do such thing.