I haven’t heard many people explicitly saying “these things behave like humans”, but more generally “we don’t even know how to define human consciousness, we don’t have a thorough grasp of how the brain works, we are still very much in the dark on a lot of these topics, so how can we say one way or the other?”
In other words, agnosticism: I don’t know.
In general, it’s baffling to me that anyone has an unshakable opinion on what exactly is happening. It seems like raw egotistical hubris.