I can actually understand the latter possibility, but it’s still a giant screw up.
If so, it's a big screw up for this kind of product development. But still, it's much better than "these brakes have a design flaw and can never work properly and we don't know how to make cars".
brake tests
Most of the other automakers will just leave you rolling around in a defective 3400 lbs pile of metal for years until they get to a fix or finally figure out there's a problem.
Tesla was able to quickly improve its product with a software update and without inconveniencing its customers. It's a superior solution.
https://www.cnbc.com/2018/03/29/tesla-recalls-123000-model-s...
Rarely are recalls for serious defects (those are usually caught before a model is sold), but they are overall a good thing for safety and long term reliability.