See I can't see colour, but fun fact, flame based weed abatement systems can be easily purchased in many parts of California, and they are basically just a flame thrower attachment for propane tanks.
It is is a hadheld nozzle that ejects propane that is on fire ~3ft for the purpose of burning weeds, I think that is enough to count as a "flame" "thrower"
As someone who uses a propane burner for blacksmithing, I am constantly reminding my wife "IT'S NOT A FLAMETHROWER!" because once not long after we met, my old decrepit one sprung a leak out the side and from her viewing angle she thought it had set me on fire.
In fairness, mine is designed for a 1ft flame, but I did use a weed burner in my very first forge. About 2ft if I blasted propane without a regulator.
I'm not ready to die on the hill, but I will gladly throw up some polite resistance upon it.
Vaporous propellant ignition is a torch, usually butane not propane as propane leaves residue on the glass, and burns differently.
Flame throwers are literally a pee stream of fuel that is ignited on the handle by the operator. There is only destructive use with flamethrower as well due to the lack of accurate control.
The first flamethrowers date to the 7th century. No they aren't modern military flamethrowers but as with the description "commercial flamethrowers are generally blowtorches using gaseous fuels such as propane". No they don't have the same range or lethality but saying they cant both be flamethrowers is saying a BB doesn't shoot projectiles because it's not as the same projectiles and range of a military assault rifle.
Not all flamethrowers throw napalm, as seen flamethrowers predate napalm. A flamethrower made to abate weeds is not nearly as powerful as a military grade one, but it still throws flame. So even if you can't buy a fancy flamethrower that shoots out 20+ feet, you can have some fun with a little propane tank based weed abatement "flamethrower". I wasn't trying to kick up an argument on the technicalities of what is a flamethrower, but your arguments are the weakest thing to support your idea.