No Periods Period - what kind of examples should be listed?

The description of No Periods, Period says one should not list examples where the period is plot-relevant. What examples should be listed then? Only aversions where the topic is mentioned with no bearing on the plot? When I browse the example list, their appear mostly to be relevant. And does the same policy apply for work pages? E.g., The Tale of the Princess Kaguya mentions a plot-relevant example. Should that be removed?

Strange. "Tendency trope" such as No Periods, Period should list only aversions, instead of the reverse.