Your experience matches mine too. Experienced devs are increasing their output while maintaining quality. I'm personally writing better-quality code than before because it's trival to tell AI to refactor or rename something. I care about good code, but I'm also lazy, so I have my Claude skills set up to have AI do it for me. (Of course, I always keep the human in the loop and review the outputs.)

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.