There is a significant difference between an accident and intentional act.
Neither of these events were "accidents". So most any traditional coverage is not going to apply in that regard.
As for the vehicle costs, it appears that Turo may cover the vehicle loss (certainly as a matter of goodwill in such a high profile event).
The real pain is going to come from the civil liability suits. I suspect Turo will either successfully back away from that, or get drug into it and go bankrupt from it. The Vegas event was a sole person hurt (the perpetrator) and so no one is likely to sue for civil liability. But the NOLA event has, at current count, 15 dead and dozens more injured; there's going to be a lot of compensation sought from that one.
Just my opinion.