As somebody who has been coding for just shy of 40 years and has gone through the actual pain on learning to run a high level and productive dev team, your experience does not match mine. Even great devs will forget some of the basics and make mistakes and I wish every junior (hell even seniors) were as effective as the LLMs are turning out to be. Put the LLM in the hands of a seasoned engineer who also has the skills to manage projects and mentor junior devs and you have a powerful accelerator. I'm seeing the outcome of that every day on my team. The velocity is up AND the quality is up.
This is not my experience on a team of experienced SWEs working on a product worth 100m/year.
Agents are a great search engine for a codebase and really nice for debugging but anytime we have it write feature code it makes too many mistakes. We end up spending more time tuning the process than it takes to just write the code AND you are trading human context with agent context that gets wiped.
We've spent years reducing old debt and modernizing our application and processes. The places where we've made that investment are where we are currently seeing the additional acceleration. The places where we haven't are still stuck in the mud, but per your "search engine for a codebase" comment our engineers are starting to engage with systems they would not have previously touched.
There are areas for sure where LLMs would fall down. That's where we need the experts to guide them and restructure the project so that it is LLM friendly (which also just happens to be the same things that make the app better for human engineers).
And I'm serious about the quality comment. Maybe there's a difference in how your team is using the tools, but I have individuals on my team who are learning to leverage the tools to create better outputs, not just pump out features faster.
I'm not saying LLMs solve everything, FAR from it. But it's giving a master weapon to an experienced warrior.
You said that you're restructuring the project to be LLM friendly, which also makes the app better for humans. I 100% agree with this. Code that is unreadable and unmaintainable for humans is much more difficult for AI to understand. I think companies that practiced or prioritized code hygiene will be ahead of the game when it comes to getting good results with agentic AI.
(They are good as coder psychotherapy tho.)
I would be curious to see if I'm just imaging this or it really is a trend.
It's clear to me as a more seasoned engineer that I can prompt the LLM to do what I want (more or less) and it will catch generally small errors in my approach before I spend time trying them. I don't often feel like I ended up in a different place than I would have on my own. I just ended up there faster, making fewer concessions along the way.
I do worry I'll become lazy and spoiled. And then lose access to the LLM and feel crippled. That's concerning. I also worry that others aren't reading the patches the AI generates like I am before opening PRs, which is also concerning.