You cant really put water on an oil fire either as it will just spread. Personally id rather deal with a lipo fire that stays in 1 place than a flammable liquid fire that can douse people and property.
Near where I live, there was a Tesla that was crashed into a tree. Major accident that damaged the battery.
The fire fighters worked all night to put out the fire, but it kept reigniting. They finally just let it burn till the following mid-day and once it was out they had it towed.
Later that night it caught fire again in the tow yard.
I have yet to see an ICE car have that level of fire problems after a crash.