You're being highly reductive. Yes, that is obviously akin to many open world games in that you travel or go from point to point, but other open world games do not have the same gameplay or breadth of mechanical systems in that pursuit, eg where even the very act of walking itself is a rewarding challenge where you have to constantly consider your balance, stamina, centre of gravity, weight distribution, speed etc, as you do managing the very load you carry, be it in how it is dispersed across your body or vehicles or tools, or the way it's stacked to preserve damage from time fall rain, to how you plan or gauge your routes, the tools or equipment you choose to take with you that will shape what paths you might be able to take, to the asynchronous multiplayer that may have a fundamental impact on how you or others interact with the environment or with your tasks and so on.
In other words, this is traversal where the very act of traversal itself is a rich and mechanically interesting gameplay system or simulation, full of countless considerations, which is unlike any other open world game.
