Eh, that's exceedingly rare. I wouldn't be surprised if defects in the mass manufacturing of the new battery produces rare fire hazards too. I assume the thermal expansion and contraction of the containment materials will lead to issues too (I've seen it in even cooler operation temps for other batteries). Lithium sulfur batteries are supposed to be fire safe too. I assume there are other options out there as well, stuff with thousands of cycles vs hundreds.

It will be interesting to see how it pans out over the next decade, if it becomes commercially available at all.