While LiFePO4 is a safer chemistry than batteries using NMC, they can absolutely still catch fire. The only Lithium based chemistry that I know off that you might be able to describe as "don't catch fire" is Lithium Titanate/Titanium Oxide (LTO), but even then, in a bad enough situation I believe it will still ignite though briefly but won't sustain. LiFePO4 will still ignite and sustain a fire from the demonstration videos I have seen.

I don't know enough about the "Blade" battery chemistry but early info I have seen seems to indicate a very high level of safety as well, more so than current LiFePO4 setups.