I agree, but if we go one step further, what is the goal of those logical units? If the answer is, to make the code more maintainable, then the next question is, for whom? For humans, or for llms? Is it still important that the code is maintainable for humans if no humans read it anymore? Those are not rethorical questions, I am asking them for real. What is "good quality" code in the age of AI? If there is a lot of duplication but no performance consequences, is it really a problem if only AI modify it?

> But they don't help much to create logical units, with intuitive boundaries, good cohesion etc.

Completely, 100% agree on these exact points. I have access to every frontier model at work. None of them write what I would call clean code. At work the teams that have gone fully vibe-coded have repos full of broken abstractions that just accumulate over time. Eventually most of the effort of the team and their AI tokens seemingly goes to fixing issues that then break other things. Any attempt at 'refactor this mess, make no mistakes' turns into a _huge_ churn of changes ("shuffling the deck chairs") without ever really fixing things.

Ofc a big part of it is still knowing how to prompt correctly and manage context.

Perhaps a lot of devs still have a flawed mental model of how these things even work.