The initial poster has definitely a point. Most of the hash power comes from one single country which happens to be China. That's just the way it never should be. The idea about Bitcoin was decentralization and having almost all the hashing power in one single country now is quite bad imo. The POW with SHA-256 should be replaced by something far more complicated that can't be done in an ASIC for years to come. That way more people all over the world would be encouraged to run a full node (again) with some minor mining capabilities instead of having hundreds of warehouses stuffed with ASICs in China.