Yes, my point is that a possible explanation for using 32,000 gallons and calling Tesla is that spraying 3,000 gallons on the battery did not successfully extinguish it.
What you are overlooking is that the correct procedure as documented by Tesla, which is what the firefighters had been doing for four hours, didnotstopthefire.
Sounds like they did already know this and that's why they did it. If they googled it, they might have got the wrong answer like you did. So your criticisms aren't valid.
1. firefighters should know this already
2. if they didn't they could have googled it like you just did instead of having to wait around to get in touch with someone from Tesla