Still, even current AI/LLMs can do debugging. For example after an hour of process of elimination it finds the bug, reproduces it, then it recommends a ~1 line

Still, even current AI/LLMs can do debugging. For example after an hour of process of elimination it finds the bug, reproduces it, then it recommends a ~1 line fix. Then that's where one should spend their attention budget, and think through the consequences, weighing positives and negatives, and then either asking for a different fix, not merging, or accepting it. This is a lot more productive IMHO.