Engineers, free from writing thousands of lines of boilerplate, now have more time to review code and be more efficient in that armed with LLMs. E.g. instead of asking a question about the code and waiting for the author to respond, I can ask an LLM and get the answer almost immediately. Or, if I see some strange code being changed, I am always curious why it was there in the first place and, instead of tracing it through git blame over formatting, renaming, and moving files around dirs I can delegate this to an LLM. If I have doubts about it working in some environment I can, again, make an LLM test it out instead of asking the author etc. etc.

And no, telling Claude to implement a Jira ticket is not worth $200K/year. Checking if it has not done something stupid and correcting it when it's trying to - is.