It's nothing to do with the metric system. Can you visualise 330m, or would it be easier to visualise three football pitches (or insert any other familiar large area)?
I know how much that would cost me in server farm, apartment, and retail space. My exposure to a magnitude (or a collection of) meters far exceeds my exposure to a large area reserved for multiple say, soccer fields, or any intuition on really how large they are.
To be honest, whenever I hear something like "17 football fields" I go look up the distance of a football field to try to understand what the heck they are talking about. They might as well have phrased it as the distance a snail travels in the time it takes for a tea-candle to burn.
I use metric and imperial units every day. I intuitively and immediately know what 330 meters is in almost any context.