Generally speaking I let the landscape guy give me advice on how to manage my investments...NOT.
Similarly, I don't take vehicle maintenance advice from "technicians" at a tire store.
The best suggestion I can make is to get a second opinion. (Disabling a safety feature isn't the smart option here.) Most dealers will perform a "courtesy inspection" for free, and they'll probably wash the car for you, too, while you enjoy a cup of decent coffee. If they come back and say the brakes are fine, then you have cause to start worrying about a malfunctioning alert system, but still not a valid reason to disable it.
Alternatively, take it to a good indie and have him inspect the brakes. Usually they won't charge much for that basic inspection, and if there is an issue and you pay him to fix it, he'll waive the inspection charge.
Or, of course, do a little investigative work in your driveway.
Good luck.