You can still understand a system deeply and find elegant solutions, and use LLMs to translate your idea into code, then review the code. It's still much faster than writing everything by hand in a lot of cases, if done properly.

Reviewing code that was written by somebody else is one of the least fun and enjoyable activities in my experience . I personally don't know any programmers who enjoy process of doing PR reviews.

If you only care about number of features Copilot implements for you or lines of code Claude Code gave you - you must be a manager.