It should read 'the higher the temperature, the greater the vapor pressure'. -SD

Precisely, and let's leave it at that. -HJ

Yes, that's the essence of it! I like that because it gets away from the pan of boiling water on the stove analogy, and the use of the terms 'boil' and 'boiling point' which can conjure up the wrong image. Inside a fuel canister atmospheric pressure is not imposed upon the system, rather, the temperature is imposed on it by the surroundings and the pressure is determined by the corresponding point on the liquid-vapor P-T curve for that substance (propane, butane, mixture, or whatever). Our only interest in atmospheric pressure is that we want the pressure inside the can to be higher than the barometric pressure outside so gas will flow out, the burner will burn, and then we can talk about a pan of boiling water.