I wonder why we need this very thing of AI generated. It's a luddite view of AI. Much like the need to distinguish between handcrafted versus machined products - is there a real utility to knowing this? For educators looking at evaluating students, essays and the like - we possibly need different ways of evaluation rather than on written asynchronous content for communicating concepts and ideas.
For civics, I would say yes.
Imagine you were talking to an online group about a design project for a local neighborhood. Based on the plurality of voices it seemed like mist people wanted a brown and orange design. But later when you talk to actual people in real life, you could only find a few that actually wanted that.
Virtual beings are a great addition to the bot nets that generate false consensus.