@fyrepenguin I think it's "since the poles literally come to a point, some ring around the pole will be the same length as the map projection"
so it's an inversion of the usual criticisms of the Mercator projection--the poles aren't to scale, but (part of, and only that part of) the poles are accurate
@ErinAnne I guess that’s only if you try to make a map that goes that far - I was thinking along the lines of “most projections stop before they get too close to 90°”, but now I also see what you mean where there’s a thin ring where it’ll be a 1:1 scale