kris
Arcane
No, choosing your land mass is not an exploit, it's part of the world creation screen, the screen you're supposed to have fun experimenting with in all the varieties on offer - by intentional design. An exploit is something that wasn't intentionally designed into the game as a means to make the game easier but can be found by players by experimenting with stuff.
Now you did just put in reverse and back into the post.
Obviously the exploit is not just using the world creation scene. but using the world creation screen to set up a scenario were you can USE an exploit is what I talked about. Like if you calculated that starting on a jungle island on a small archipelago map will give you an science victory and then play it out. Then you used an exploit to set-up a scenario you knew you would be winning.