It seems he got a talking to after that interview. Gotta wave those pom-poms higher.
I think it depends on the situation. When it’s time to ask for E-7 budget then the kill chain is something he worries about. But the point of this interview is to send out a message that the US is confident about deterring AR, so the opposite message must be sent.
But even here he didn’t say that the J-20 is a junk fighter, unlike another Super Power often does.