Molex connectors do indeed melt but rarely catch on fire. Molex connectors are made of nylon which melts as low as 170C.
The pictures of the internals of this adapter are absolutely horrifying. This is 737-MAX style gross negligence: Several consecutive worst practices/shortcuts that ensure catastrophic failure one way or another.
Hook up wire generally doesn't have an insulation rating over 105C (dry), so 170C melt point is fine (assuming that is some real transition temp, and it isn't just melting slower at 100C)
The pictures of the internals of this adapter are absolutely horrifying. This is 737-MAX style gross negligence: Several consecutive worst practices/shortcuts that ensure catastrophic failure one way or another.