Like the touchscreen that couldn't handle the temperatures in the passenger cabin when the vehicle was parked in the summer sun. Once again, Tesla's engineers chose a part that was wildly unsuitable for its use case.
All major auto manufacturers sub-contract parts of their cars to third parties. It doesn't matter who designed it, what matters is who slaps their logo on it, and ships it to the end user.
I, as a customer, don't have a business relationship with that subcontractor. I do have a business relationship with the manufacturer. They own the profits, and they own the problems. If the subcontractors they choose produce crap, it is reflected in ratings of their products.
Tesla didn't just go to AutoZone and pick up some brake calipers and pads. Tesla sent a specification to that third party, and they probably should have specified that the brake pistons don't seize in the calipers if the duty cycle is quite light.