[jp10558]

You'd have to bite the bullet that most human posters are also parrots by that definition I think. It's certainly taking input from what others have said, and it's not coming up with new ideas. But it's answering many questions same as human posters online would, by combining stuff they heard elsewhere into a coherent text post.

Given that the output essentially is similar to what human posters online are doing in many many cases the term isn't useful to distinguish between the two.

It's certainly not working like Eliza where there are specific programmed response trees to choose from. It doesn't seem to be just copying sentences and pasting them into the output.