It says up front: Get the obvious questions out of the way (such as "what methodologies do you use") so you can put your attention on the ones that matter.
My resume barely mentions OS/2 anymore, because I'm unlikely to get a job that requires the knowledge. But if I happened to interview at a company where it mattered (perhaps for legacy tech) or where the interviewer shared an interest ("oh! something we can chat about!") then it's a reasonable topic of discussion.
Also, interviewees expect those questions. They can be a kind of throat clearing. That is... get 'em out of the way.