It makes it harder to navigate with the map tilted 45 degrees to the right. I don’t know why anyone thought it was a good idea. It adds nothing to the game, only a nuisance.
Nothing difficult about it.
North is clearly identified on the map, use the in game compass and you’ll be fine.
Normally maps are viewed so that up is north. This way east is right, west is left, and so on. I didn’t say the in-game map was difficult, just harder to use with it being tilted this way with no added benefit.
So it adds a little bit of difficulty.