Yes, we know about such knock-offs.
He says they will do something... there is little to be done. The costs to stop it will exceed the revenue one collects. It is a no win scenario.
Unlike him, we are not going to tell how we know the units are knock-offs. We know. If we tell, they will change so that the uninformed cannot tell.
The best tell: when the price seems too good to be true, you know it is not the real deal.
That said, a lot his innuendo toward the Chinese people rubs me the wrong way. We can't blame the whole of the Chinese people for the ones who choose to get rich through theft of real products. Most Chinese I met hated that their country was the center of such illegal products. It was an embarrassment to them.
I do agree with his statement about not supporting the illegal copies. We all ought to avoid them.