The repeated destruction of US humanint networks over the past 50 years is probably one of the single largest threats it faces. Between the dismantling of the CIA hint networks by ourselves and complete destruction of our Chinese hint network by the Chinese, the US is blind in a huge number of situations.
This is not about the quality of any one channel, it is about needing multiple channels with distinct provenance that can be used to cross-reference each other. The fact that this article even frames the question as it does means that they have completely missed the point -- there is no such thing as bad intel, only intel that you are too blind to know is inconsistent.