I agree. Those who own Optimus Novas (me) learn/know that the valve is slightly open during storage. Failing to close it prior to pumping guarantees flareup outside the perimeter of the stove/bottle, on the ground. All stoves are firebombs in one way or another and user discretion and skill come into play.
Of all the man-made liquid fuels out there, alcohol is probably least dangerous.
Cigarettes don't seem to have valves when people flick 'em out of car windows....and lord knows I've picked up hundreds in my preserve, some clearly lit when they hit the ground based on the charred grass under them. Yet, smoking isn't banned during most fire bans. Burn-bans tend to be blanket laws, with loopholes.
paul, texas KD5IVP