lol looks like they found a more efficient way to mine blocks! ~ what stops anyone else from reverse engineering those chips? haha :-D obsolutely nothing! ..ohh what their patent? ya sure...bwaaa
you re still not getting it fully...
Allegedly, they sold miners (like S9) to Joe Public with a feature under discussion turned OFF, but they turned it ON for themselves.
At least this is one of the suppositions, and a proof of the puding is in fact that they produce abnormally high number of empty blocks, which is predicted to happen if they activate the feature.