There is a saying called AI Being.
Then, AI Being can correspond to Human Being.
Human Being is "labor force", euphemistically called "human resources".
And AI Being is "AI labor force", or "AI human resources".
However, this so-called "AI labor force" or "AI human resources", the true laboring, the real AI Being, the true "AI human resources" are the AI models. It is the AI models that respond to and meet the needs of users.
And AI Agent is more like labor dispatch; every time a user makes a request, the AI Agent finds the suitable "AI labor force" (AI model) to execute the user's needs.
One cannot deny the intermediary nature of AI Agent, but one also cannot deny the necessity of AI Agent.