Salted crackers are salty.
The crackers/biscuits on the life boats are not salted.
If some passenger is dumb enough to refuse to board a lifeboat to escape a sinking ship, why would you want to force him to go?
Heaven forbid that he would survive to reproduce.
This would also leave more water and food for the ones smart enough to get into the lifeboat.
Charles Darwin was right.
The very last thing the world needs today is more stupid people.