It’s lawyers.
People blew themselves up when pouring gasoline on open fires.
That caused 2 things to happen:
1. Liability insurance through the roof - figured per can. Each idiot that blows himself up in a terrifying, horrifying and painful way will leave his family a tidy little nest egg courtesy of Ambulance-Chasing Charlie. Twice as much if they do it at a holiday picnic with the entire extended family there to watch the live screaming immolation.
2. The attempt to address this resulted in can openings where the gas couldn’t just be all dumped out in a few seconds. Idiots can still splash some gas on themselves, and set themselves on fire, but it’s not the napalm-like fireball when they suddenly and unexpectedly were blowing up a whole can at a time.
Stay safe!
That sounds perfectly logical.