a) I find myself fairly regularly irritated by the flow of human-human conversations. In fact, it's more common than not. Of course, I have years of practice handling that more or less automatically, so it rarely raises to the level of annoyance, but it's definitely work I bring to most conversations. I don't know about you but that's not really a courtesy I extend to the LLM.
b) If it is, in fact, just one setting away, then I would say it's operating fairly similarly?