The author says "I refuse to believe they’re unaware of this. This doesn’t feel like an oversight, it's either a deliberate design decision or they just don't care." Agree that this is an uncharitable way of looking at it.
Its a justifiable worldview. I'm an Indian dev and I've seen obvious backdoors like these added to the backlog as a low priority bug. If somebody spends time on this, that means features are being delayed and you are rewarded less.
I've worked in lambda web editor (not in Git) and my lead considered replacing sql injection with parameterised queries was a distraction/insubordination. Cant wait till audits, data breach insurance and imprisonment becomes the reality.
I don't mean to pick on your comment, but to respond to a prior comment, you are beginning with a very positive world view and interpreting the events from there.
Lazy API that did not vet a simple backdoor?
Good coders but accidentally pushed the debug version of the API?
I am going to have to say the second option feels less likely (yes, I have been called cynical).