Wrong answer apparently. Take a look at post 143 above; there's no other plausible explanation other than people counting snowstorms as years.
Having refreshed my memories of the total process by reading several hundred articles in the last few days I am confident that they come close enough using current methods to satisfy any relevant argument.
If Ice builds up faster it squeeshes out the bottom that much faster.
Most likely no one has ever used that part of Greenland to drill ice cores. They'd want (and need) something more stable and not as wet.