Just because it's got some defenses, doesn't make it infallible.

[Though speaking specifically of the voidstorm... it could protect them from dying in the void, but not from how it affected their brains.

Though maybe the lack of curtains was a design flaw.]

Still, no idea what the priorities are for people who build voidcraft. We could be picking up on things they missed, or risks they never eradicated completely.