That would only apply if people used the map within the game. Specifically, if when they wanted to find how to get somewhere by subway they actually turned on the game, navigated the character to where the map was in-game, and then studied it to find the best route.

What this is more akin to is someone posting a youtube movie including in-game footage of Last of Us. And Naughty Dog extends a ton of grace when it comes to this. Even allowing videos of the whole game being played through.