The statement that it produces no chemicals more toxic than itself is true but misleading because the combustion products will largely consist of chlorine gas, hydroflouric gas (not the acid, the gas) and a variety of other flourine compounds waiting to make your internal metabolism incompatible with life.

I would also argue that CO2 and dry powder isn't an suitable extinguishing media for this, as CF3 doesn't give much of a shit when it's got it's own hyperactive oxidizer on board.