There would be specifications, tolerances, or functional tests that the OEM sensors/parts must satisfy. If a non-OEM part met the same requirements as the OEM part, the OEM would have difficulty proving that the part was not fit for use.
So Mr. Talbot has now achieved notoriety for being caught doing something while sober, the only explanation for which would be to have been drunk, to try and cover up being caught doing something while drunk that should only be done while sober.
Some electric stoves, when on, will cause the stove top to heat up hot enough to start a fire. The only possible reason I can think of why they left it on is they wanted to start a fire there (or possibly to show off their burning level of incompetence). A little bit surprised they weren't charged with attempted arson.