At this point do you even need to hire any juniors at all? It seems like there's a heavy reliance on AI agents and LLM especially for juniors. Is hiring a warm body that sits on a chair and prompts at a computer a good use of money?

yes, and no. Everybody is trying to hunt junior unicorn, They exist , but the ratio is 1 out 30. For these people, AI is a real elevator of their career.