I watched the entire event.Good question. A player/commander's ship should be subject to destruction for blocking a port/starship base "mailslot".
In the incident I recall reading about, someone with a way-modded ship (modded as in "cheat") did the blocking and his ship could not be destroyed. This was done to make a point to FDev.
That's my recollection. Anyone please correct me if I am inaccurate.
Dude god hacked his boat and stuck it in the slot. He was eventually pushed out by another commander. Dude's shields never dropped. Maybe an hour twenty total time?