But Tesla didn't say "we're new at this and we learned from it". They said it was a "supplier-related issue" that has been "addressed for cars in the field" and "resolved [...] with fundamental design improvements".
Nothing in the statement tells me that there won't be another "supplier-related issue" down the line. There should be controls in place for this.
Tesla is new at producing cars in large quantities, and it has greatly improved their quality and reliability. There is no way this could have happened unless they were learning from their mistakes, and that includes controls on suppliers. Do you really disagree?
Nothing in the statement tells me that there won't be another "supplier-related issue" down the line. There should be controls in place for this.