As what Zero said, GMs also have their own personal life and cannot spectate the PvP Ladder everytime you ask them too. And about the programs, pls think of the time and efforts a GM can do with a problem that can be solved just by reporting. I also have never seen feeders that gets to win some PvP tokens.
As u know, GMs have lots and lots of work to do, some updates, some sprites and many more. And they have less time to watch and observe PvP Ladder and the only solution that can make their work easier is to REPORT a case.
And i Disagree with you, i sometimes went to PvP Ladder with BOMBIN~ERRYDAY inside and guess what? He killed every person who gets in and camps there, thats his way of Laddering.
BTW as what ive said on my first post.. i take it back :3 now to think of it im not sure.. Im not positive about it nor negative about it .. just inbetween :)