Another aspect of this might be what I'm experiencing.

I'm currently increasingly often confronted with overly bloated codebases that, with the added speed of llms / coding assistants, have reached levels of unmaintainability much faster than traditionally possible.

Now, fixing those repos with LLMs fails miserably in my experience, so you have to invest hundreds of hours of senior engineer time to make the projects workable again, regardless of the novelty of the problem solved by that codebase.

It also frequently makes the engineers pulled in to help miserable.