If agentic coding worked as well as people claimed on large codebases I would be seeing a massive shift at my Job... Im really not seeing it.
We have access to pretty much all the latest and greatest internally at no cost and it still seems the majority of code is still written and reviewed by people.
AI assisted coding has been a huge help to everyone but straight up agentic coding seems like it does not scale to these very large codebases. You need to keep it on the rails ALL THE TIME.