Also, you cannot measure flames with standard IR equipment. IR heat radiation is a collective action of a surface, which a flame does not have. A flame has selective spectral light distribution including in the IR band, plus flames are transparent to some degree. Abuse of measurements does not quality as measurement. Recall the propane flame pretended to be 125 to 300 C, which is quite short of the real temperature.
Your point was why Bob used the Teflon contact test to show Ohmasa that the brightly glowing metal was cold, at least under the melting point of Teflon 327°C (621°F). Also, the flame applied to the Teflon did not melt the Teflon. Did you get that far into the first video?