This is NOTHING new.
In Asia, Shimano fakes abound. Fake Shimano cranksets get broken a lot. In many cases, even the seller or even the distributors won't know either, that's how much fakes are over there.
It's not limited to just Shimano either. FSA, 3T, Zipp, Easton, Specialized, Cervelo,.. have tons of fakes floating around. Sometimes the fakes are really fakes, other times they are "factory seconds" that employees steal (though the factories try to tighten this down but some simply get to the outside world).