This sounds like horrible advice, flames don't "blow out"

I’m pretty sure they were being sarcastic. There is no practical way to get close to a fiery auto crash and attach a bunch of fans to a currently on fire battery.

There's the unfortunate middle area where the air makes the fire rage even hotter, like a blast furnace.

makes me wonder two things:

- what about draining the cells through the main charging port ?

- would that worsen the situation ?