Having been involved at the production level for smaller but similar projects, I was the one asking the pros for ‘dumbed-down' answers when I felt the language/explanation was over the heads of the viewers. I can assure you that’s what happened here.
It's quite difficult for an expert with knowlege to shift into a dumb down gear by themselves. It takes the talent of the interviewer (on or off camera) to prompt for an answer that the public can understand. Hence the re-shoots and sound bites edits. Most of the time when a microphone is simply shoved in a face, lots of edits to capture 5 secs of words is all that is captured. On the other hand studio shots are a lot less pressure ridden but hard to capture suspense and the hold on an audience without a background script lurking behind the editing scenes.