As far as the "dangers" of gasoline.
This was a popular ploy of a certain Diesel Engine
Maker....that bought out Universal.
Kind of like the way General Motors bought up electric
trolley companies and replaced them with buses.
In all my years, the common denominator for Gasoline Fires has been poor refueling practice, using a drill pump to evacuate gasoline from a tank (seen twice in Baltimore)
or just poor maintenance
IMHO anyone that goes down to a boat and "fires it up" like a car w/o checking is axeing for trouble