You'll see that some of directions are true but some of aren't. It is your chance to your test prove or disprove the map.
May we assume you tested this?
If so, you've identified locations that have an accurate view of North, and locations that don't. In which case, how far did you travel for this experiment? It would need to be very far, for there to be a visible variation in what direction North is, no matter the shape of the Earth.
Either the Earth is exceptionally small, or there was interference in your measurements.
Or, instead, if you're saying that your local area has a different North to what the RE map states, then how are we meant to test this? It could well be simply that the locations some of the rest of us are in are those where the given direction for North is accurate, in which case we have no way to distinguish between models. Should we just take your word on faith? As a FEer, I assume you speak out against blindly following what people say.