I was laughing earlier today when I read through translations, thinking how Yuzu really just always tells us the same old things (we know about gyoza and purin and games and everything already), but then later today I got to thinking, Tetsuko's Room must be a much bigger audience than a lot of the places where he's shared those things with fans before, right? So maybe these facts (that he already knows are endearing from our attachment to them) are new for people in that audience, and will be just as endearing to them as they have been for us for years (and years, and years LOL).