When you open Info Center window then select System Monitor page, you find a description label with a button and the monitor is started in background, this feels really weird and not well designed, it seems like system monitor cannot be fully integrated and is being forced inside Info Center as an empty page and at the same time you can launch Info Center from System Monitor Tools combo box. I'm not sure if I'm correct, but System Monitor as a concept seems to be more general and should be the one including Info Center data and not the opposite.
It's there to aid discoverability of the monitor as previously kinfocenter contained some of the data that moved to the monitor.
(In reply to Harald Sitter from comment #1) > It's there to aid discoverability of the monitor as previously kinfocenter > contained some of the data that moved to the monitor. There is a problem of cyclic discoverability. For me as an average user, it just feels out of its place.