I don't believe I misunderstand anything. This would be an interesting case study. It is very convenient to blame an employee "going rogue" for a dangerous issue like this. The design wasn't even changed. They just used a lubricant (soap?) to slide it on.
This overall points out the immaturity in Tesla's manufacturing process if changes like this can happen and then occur or affect every vehicle of a particular type produced, does it not? Overall, it still seems like a "below the line" change. These can still be quite impactful (see: memory corruption bugs leading to compromise and functional exploits). But it is still more akin to a bug or production flaw than a design flaw.
This overall points out the immaturity in Tesla's manufacturing process if changes like this can happen and then occur or affect every vehicle of a particular type produced, does it not? Overall, it still seems like a "below the line" change. These can still be quite impactful (see: memory corruption bugs leading to compromise and functional exploits). But it is still more akin to a bug or production flaw than a design flaw.