[Thanakil]

They didn't did something that big.
The concept is the same, but again, the maps are actually different.

They're not tracing the picture if they use a different map layout.

Sure the concept is VERY similar, enough to make us think "did they or did they not copy the "boat in snow" idea" but something for sure, they did not copycat the whole map.

The layout is different, that much can be seen if you observe the pictures.
They may have used his map as inspiration, and he may deserve a credit for that.

But he's whining way too hard (and spamming a forum doesn't help your case) and they did not "steal" his map like he's claiming, since they're using a different layout.

Visually it's highly similar, internally there's many differences.

And the visual part could have been Epic idea completely. That we don't know, maybe it came from someone inside Epic and it has no connection to that guy's map. Maybe they did inspire from it for the visual part.

If they did use his map as inspiration, then credit should be given. And maybe it's planned.
But something for sure, they did not "steal" or "completely copy" his map. There's enough difference in the actual layout for that.