He's also direct in his communication. IxFPs are more indirect, even when blunt. Both can be blunt or diplomatic, and it's hard for me to articulate the difference, but I see him as Ni-dom blunt, not Fi-dom blunt.
Okay, wait, I thought of a way of articulating this..... Notice that he gets very blunt when guarding some info he does not want the interviewer to know? He puts up a wall & is rude about it. I see FJs do this a lot. When there is a perception of someone as rude, their Fe mindset feels justified to respond in kind. People should know not to pry, after all, and this directness sort of shames them. It's like he's scolding the interviewer on propriety. In contrast, he is otherwise relatively diplomatic for someone who is guarded & reserved. When it's info the FJ is comfortable with sharing, then they may be less direct & more diplomatic, seeking to gain consensus, understanding or approval even.
An FP type will often be blunt when expressing what is important to them, because they want it to be known, and accuracy is more at stake then propriety. When they want something to be known, then they are blunt. When they want to guard something, then they often become vague & indirect. I rarely slam people down when they pry - that would alert them to the fact that I am guarding something. I want to hide that I am even guarding something.... So instead I brush it off, give a vague answer, and try and distract them & lead hem towards another topic.
I definitely see him as an FJ in this respect.