Hi
That particular Runtime Monitor is showing you the numbers of triggers, fixed crossings and trc items on your route and in the session caches. It will also tell you how many junctions, trackmarks, signals, drivers etc when you add them. In my sessions, which make full use of Pieres rules and driver commands, there are 7 Runtime Monitors which are invaluable for diagnosing why a train has got stuck at a particular signal or junction.
Far from being stupid, the Runtime Monitors are excellent routines for diagnosing issues in sessions that use such things as Enhanced Interlocking Towers and Mission codes etc., although I suppose that you might view them as stupid if you don't understand what they are and what they do. The window is like any other in that clicking on the cross in the top right corner will close it.
Regards
Brian