The origin of that phrase is actually Alfred Korzybski - https://en.wikipedia.org/wiki/Map%E2%80%93territory_relation https://en.wikipedia.org/wiki/Map%E2%80%93

The origin of that phrase is actually Alfred Korzybski - https://en.wikipedia.org/wiki/Map%E2%80%93territory_relation https://en.wikipedia.org/wiki/Map%E2%80%93territory_relation ; also see Magritte's The Treachery of Images etc., the idea is not recent.