Pressurized Alcohol
Lady Lillie came with a two-burner pressurized alcohol stove. It's simple, straightforward, and works fine for us. We have used both the wicked alcohol and propane on charter boats. We would buy wicked alcohol over pressurized alcohol ir we were buying new. We have a propane grill on the back rail that is also a backup. All of the crew we have had for overnight cruises have learned how to use the alcohol stove without problems.
A little planning accounts easily for the slower cooking rate of alcohol. If we want a quick start in the morning, we make coffee the night before, and store it in a thermos. Boiling water for coffee in the morning takes a while but we like a slow pace anyway, and bacon, toast, and eggs work just fine. All of that gives the Admiral a chance to sleep in, and rise when the smells of coffee and bacon draw her out of bed.
It seems to me that a boat insurance company could tell us the risks of the different systems. It's my impression that fires are a leading cause (if rare) of total loss on boats (behind hurricanes), and that propane is implicated more often than alcohol.
Thanks for the thought that a metal alcohol container could easily be punctured - ours will now move from a cabin locker to the cockpit locker with overboard drainage where we keep the propane bottles.