Who cares about Nogizaka?
Well, anime is entertainment after all, so that's true.
Interpreting and giving meaning to stories
For example, in episode 6, there is a question about the meaning of Nyaan's book.
It may represent the character's inner world or hint at the story.
Even if it's just a pattern straight out of the director's or creator's bookshelf, I can interpret what influences they have had and how they are reflected in the story, even if it's unconscious (this isn't far-fetched or sophistry).
If this is just the director's favorite idol, then this kind of speculation is completely disconnected from the story and therefore meaningless (the only thing that matters is that the director is an idol fan), so I feel like it doesn't really matter.
Of course, that doesn't mean it's not fun.