I would say that having "interrogation techniques" crossed out is a pretty good indication that the author's state of mind in an interview situation is aggressive and domineering.
I would have said the same thing until I read the rest of the article. In context I think it's meant primarily to be funny.
The author clearly maintains some expectations about the level of response from the candidate, but overall it's designed to be interactive. Chances are that unless the candidate gives a really superior answer, it's not going to be the only question asked.
What is the meaning, in an essay, of a cross-out word?
Generally, I would say that any time an author takes the extra trouble to write in an extra word and cross it out, they are making some kind of meta-comment deliberately, rather than straightforwardly revealing that the crossed-out word is representative of their true state of mind. The crossed-out word is a meta-comment on what the author thinks about the shared idea-space of the author-plus-audience, usually to say "hey I know that we all know that this concept exists", usually to also say "and that this concept is an unmentionable", and often to also say "and I think that's a bit funny".
In this case, we all know that some people conduct interviews as interrogations (and some people think that indeed they should do so), and on the other hand some people think that this is offensive. And brianm wants you to know that he knows we all know it.
MAYBE it's on his mind because he's an aggressive domineering jerk who likes to interrogate people, but he's sensitive enough to be a little defensive about it. MAYBE it's on his mind because he's NOT aggressive or domineering, and he's frustrated by how easily interviews become interrogations, and his whole deal is trying to prevent that without making the whole interview meaningless. MAYBE something else. How're you going to find out? Read the article!
My point, tl;dr: If you see a word crossed-out, by an author you don't already know, and you think "Oh this author really means the crossed-out thing", I think that's a poor comprehension strategy.
The author clearly maintains some expectations about the level of response from the candidate, but overall it's designed to be interactive. Chances are that unless the candidate gives a really superior answer, it's not going to be the only question asked.