Main Rooms Policy

First, KGS is a family-aimed server. So the main chat rooms should be readable by people of any age from any culture. Thus, no swear words, no sex related conversation, and so on (see the current Terms of Service).
Second, the primary purpose of the main chat rooms is to help users with go and KGS.
Any discussion unrelated to either go or KGS will be tolerated only if it doesn't interfere with this aim and the bullet at the top.
If questions from users are (or would be) flooded in such a conversation, then the conversation should either stop or move to another room.
"Off-topic" discussions are only a tolerance and are not the purpose of the main rooms.
Discussions of a religious or political nature can quickly become heated and disruptive, so are not allowed in the main rooms.
Note: Long discussions in a language other than the room's default language should move to the main room dedicated to that language. This does not apply to conversations with lost newbies.
The admins enforce the main room policy and the TOS. They can terminate a user's connection without warning and they can ban them from KGS. Newbies asking questions are treated more leniently than regular users.

Game Kibitz Policy

Same as above but replace "help users" with "commenting on the game" and "questions from users" with "comments on the game".
Note: All languages are welcome in game kibitz.

I have seen many admins warn about keeping discussions or comments game related in kibitz. That got me thinking, what exactly was the kibitz policy? I decided to look it up and found it in the kgs help pages. http://www.gokgs.com/help/faq/newbies.html#gamekibitz

There doesn't seem to be any mentioning of off topic discussion in kibitz warranting a warning. It seems to me that bullet 1 says that discussion must be kid friendly and can't interfere the purpose of the kibitz, bullet 2 says that you can't flood in chat, bullet 3 just states that off topic conversations aren't the purpose of the room/game and bullet 4 says no controversial topics. The only fuzzy part I see is bullet 3. It doesn't seem to say that off topic conversations aren't allowed, it only says its tolerated as long as it doesn't interfere with the main purpose. This doesn't seem to be the case with most kibitz. When off topic conversations happen, often people ask questions about the game while the conversation is happening and they usually get answered at the same rate as when off topic conversations aren't happening.

Where did admins get the idea that it's kgs policy to end all off topic conversations or comments?