Of course how much fuel you use depends more on your cooking style than the stove. On solo summer trips I generally heat 0.5 liters of water from 40f/5c to 190f/90c three times a day, plus simmering 15 minutes a day. Jetboil using 110 gram fuel can gives 7 days use. Mild breezes don't significantly reduce efficiency. I admit to heating a lot of water. If you heat less, or from a higher starting temp, you may use much less fuel even with a less efficient stove.
Fear? I can think of three possible mechanisms for Redwood John's Sol Ti to have flared up:
-Pressure regulator failed allowing excess fuel to flow, overheating and melting heat exchanger fins.
-Boil over superheated canister, dramatically increasing pressure which then overwhelmed pressure regulator, etc.
- Heat exchanger fin bond to pot failed, normal stove heat melted aluminum fins, hot metal dripped onto canister, overheating it and causing flare up as above.