This one is a little Dunning–Kruger-y to me.

The range from 1400-1800 is mostly full of people who play casually but don't seriously train to become better. You can beat any friends who just happen to know the rules, but are at the very bottom tier of people who play regularly.

Saying that one is a 1400 player would be like someone who goes on a 5km jog around the neighborhood once or twice a week talking up their running ability. Sure, it's nice to be in slighty-above-average shape, but it's not really notable.