I believe my new car has a fuse you can pull to disable the remote telemetry. However, it disables some useful features, like being able to set valet mode from the Toyota app (useful because some dealer service departments will take cars joy riding) and track the car usage. it also tracks tire pressures. sure the tire pressure can easily be checked manually with my Slime gauge but having it on the phone is handy.
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.