I pulled the DCM fuse on my GR Corolla. I can confirm that it disabled the microphone. One of these days I might get around to pulling the car apart and popping in a resistor in place of the antenna.
I'll never trust some rando working at a valet to treat my GRC right. I've seen too many dashcam horror videos of even people working at dealerships failing at manual and safe rev temps.
Beyond any reasonable doubt any verbal conversation you have in your Toyota is being parsed by one or more LLMs. Anyone who believes otherwise is either room temp IQ or severely autistic.