This message would almost make sense to me except for the fact that chat discussions are hid by default and you must click show all.
I'm revisiting this but did not find any explanation of what harm hidden chats are doing in that thread.
To reiterate old gripes, 95% of the time I've seen this I've ignored it. The discussions are always about the answer or question at hand. Happens a bit more often on meta especially in the case of explaining reasoning behind policy to a new user. To be fair I always consider the suggestion, before thinking, "No, that's stupid."