For context, flamethrowers have been around for over a millennium. The weapons are necessary to destroy fortresses. Before flamethrowers, torches, slingshots, and other flammable devices were used to destroy things in war. Currently, incendiary missiles, thermobaric bombs, white phosphorus-based weapons, and other flammable explosives are much better at destroying fortresses than modern flame thrower. One has to wonder, is the future of war entirely projectile based?
Maybe
They look cool though
Flinging poo into the face of OP