Electrek's take on the rusty brake is lousy.

Rusty rotors has reduced effectiveness. EV with regen uses the actual brakes because the driver hits the brakes hard enough, presumably emergency braking.

The fact that they rust and it's not programmed to regularly enable physical brakes to scrape the rotors could be the difference between the driver can emergency stop in time or hitting something.

There's a reason why TUV flags rusty rotors as a problem.