...resurrected for this thing of beautiful stupidity from Planet Arlon, on the reason for the retreat of glaciers worldwide.
As a wild guess I might say fewer clouds in the area of the glacier due to overall cooling of the planet.
Perhaps you've heard of the term "outlier" in statistics. When considering the weather of the planet, the polar zones are very much outliers in a geographical and statistical sense. They do not represent the "planet" well statistically. Melting ice up there could mean nothing more than less ice incoming, and have nothing to do with warming.
Children aren't happy without something to ignore, and that's what parents were created for.