> For example if AI generates 2x of a utility function that does the same thing, yes that is not an ideal, but is also fairly minor in terms of tech debt. I think as long as all behaviors introduced by new code are comprehensively tested, it becomes less significant that there can be some level of code duplication.

We still run into the same issues that this brings about in the first place, AI or no AI. When requirements change will it update both functions? If it is rewriting them because it didn't see it existed in the first place, probably not. And there will likely be slight variations in function / components names, so it wouldn't be a clean grep to make the changes.

It may not impact velocity or stability in the exact moment, but in 6 months or a year - it likely will, the classic trope of tech debt.

I have no solution for this, it's definitely a tricky balance and one that we've been struggling with human written code since the dawn.