Imagine a world where you turn on the TV and there are soccer games in every sports channel. Imagine a place where you have basically no access to NFL games, and you don’t even know other people who have an idea of what football is, and specific terms spoken in another language are somewhat unrelatable. Now think about other places where the best NFL games start at 2 am on Monday.
Supporting the Green Bay Packers is something natural to people who grow up in Wisconsin or even in other states of the US. But it's certainly unusual for international fans.