(the report in question)
An article about the US CRS report to congress regarding China and it's naval prowess (including mentions about the DF-21).
While the article talks about what we already know, I found it quite interesting that in appendix B there were various interviews of US military personel (high ranking) were they were saying that they had countermeasures or 'aren't worried' about missiles like DF-21.
How much validity is there to it? Or is it just bluffing?
Everyone's scared about this thing. But I tell you something, if this ship was in combat and there were hypersonic missiles coming at it, you'd be pretty BLEEP scared too.
You don't admit things you don't want to in official reports, you admit things you don't want to as Freudian slips during tense situations.