It's an issue given that almost everything everyone buys relies on sea traffic. If it doesn't, then something required to make it did.
For example: the amount of wheat and grain that travels via ship is insane. And those facilities can't just be built overnight. They need railways to be built and need massive amounts of concrete that itself needs months to years to properly cure so that they can store grain in it. And without those facilities, many parts of the world not directly at sea level will suffer and starve.