You think something that goes "puff" and emits a wee puff of flame every so often is more dangerous than something that just sprays liquid dynamite all over the incident?
I know someone who took a drill to a small propane tank and ended up life flighted to the hospital. Perhaps the equivalent with a gas can would be worse? I just don't see it.
You cannot burst an automotive propane tank, no matter how you might try. You could probably drill a hole in it with a decent drill bit (it's thick steel) or cut it open with an angle grinder, or even gas axe your way in.
But, as I say, deliberate stupidity aside, it's not just going to burst on you.
