You don't fully understand something you didn't write. Now this is certainly not a new quip: people were mistrusting even basic compilers back in the early day

You don't fully understand something you didn't write. Now this is certainly not a new quip: people were mistrusting even basic compilers back in the early days too. In their defense compilers tended to have a ton of bugs early on that sometimes did bite the user. Today LLMs tackle on a much higher semantic level and we can assume the scope of it will continue to grow. Your understanding of what you do will necessarily diminish, while quality and performance of your products will take statistical nature reflecting that of neural nets.