If I had to bring a sandwich to work, I would certainly make it with something I do enjoy eating, colleagues be damned.
However, this is mostly in the context of being a conversation starter, though - at least in my experience.
"Roast beef, huh? Celebrate something this weekend, did you?"
I do think the Norwegian interviewed is exaggerating a bit for effect, though - several of his statement are not what I - being Norwegian - would consider normal or expected by your coworkers.
As an irrelevant aside, the town in the illustration is Ålesund. I can see my old house in the photo!
To norwegians: Why should anybody care what I packed for lunch, mind personal business and stop looking into neighbors sandwich. While at it find better topics as conversation starter.
p.s. still while at it, the sarcasm, that most norwegians call 'humor', would be much more interesting cultural feat to explore in an article or 2.