As someone who personally has test fired thousands upon thousands of airbags and airbag inflators, I can absolutely tell you that whoever wrote this only got bits and pieces correct. While I can't recall exactly how hot an airbag inflator gets, it is well over the >500° f melting point of the nylon 6/6, that those connectors are made of.
Regarding what looks like adhesive on the inflator, take a look at the caution label on the replacement airbag, shown in the bottom picture of post #26. That is what looks like adhesive.
Have you considered replacing the steering wheel also? When the driver airbag deploys, it hits the rim of the steering wheel pretty hard. You may want to inspect the steering by looking at the rim from the side, and see if it is true all the way around, paying particular attention to the 2 - 4 o'clock and 8-10 o'clock areas.