The trouble is, I'd say in the western World most people 'know how to play Chess' - i.e. at some point they've been shown how each piece moves and participated in at least one game as a kid.
Therefore, to the vast majority of people, Chess is a past time undertaken only very infrequently; like playing a game for the sake of passing time during a journey, or playing their kids, or having a quick game when dusting off and reorganising the rest of the boardgames from the attic.
Most of such people really aren't great at Chess. Sometimes you'll find somebody who hasn't really played before but has natural Chess logic, but they never practise, not half as much as anyone here does, and therefore, you're better than them.
So if anybody vaguely Chess related (i.e. somebody I know plays OTB, or even on RHP) asks me if I'm any good at chess, the answer is 'no.'
But to the vast majority of people, who know Chess, but don't play it, I'd say yes.