While some folks may require access to servers from unpredictable locations, I bet many are like me and only need access from some specific locations. A firewall rule allows you to drop SSH requests versus exposing an open port and putting a sign out saying "SSH here, I dare you to try and break in".
Stealth is better.
If the camera on the plane beams that video to the US, then a pilot reacts to whatever obstacle he's about to fly into and his control signals work their way back to the plane, while the plane is moving at 100's of mile an hour, I would expect some issues.
I came, I saw, I deleted all your files.