For those downvoting, I suspect the point is that we've had leaks demonstrating that the US government is capable of compromising hardware devices (e.g. networking equipment).
Which makes their concerns about Huawei all the more understandable. They know the risks because they've performed the attacks themselves.
There are many countries where I would expect a conscientious citizen to make the public aware of such a compromise. The United States is among them; Lavabit's actions provide precedent.
Which makes their concerns about Huawei all the more understandable. They know the risks because they've performed the attacks themselves.