But do we need the level of understanding to be that deep? If you know how your system works overall, how components interact, what interfaces are exposing/consuming, what security, performance implications are there, what data structures carry around... If you have the understanding of that, do you really need to know the actual implementation details? Maybe taking the perspective of a system/product architect is enough?
Having said that, if you want to know if an engineer really gave it a thought before having the AI do the work - you can ask things like "why did you decide to design it like this" - in person