AI and LLM and all that could be another good metric but community-based metrics are useful too. For example, someone may post a long-winded rant and I might reply "ok."
AI and such would see that as a useless reply. But, in context, a human would see it's a funny, sarcastic reply and it might get lots of likes or other engagement. So you need both AI and actual I working together to create useful data.