In the end, perhaps it was a good thing.
But consider that Google Home missed the part about it being a question. I can see other situations where such a sentence might be used where I didn't want a SWAT response or any response at all.
Yes, I understand the 911 people listened in and made the decision to respond based on what they heard, and again in THIS case they were correct.
But there are all sorts of permutations of this where Google Home and whoever they called might be bad.
I certainly don't want to be sitting around bad-mouthing my employer / parents / next door neighbor who owns guns / [insert someone else here] and have Google Home call them so they can here it all...