That's because people go neck n neck race whoring, making gentleman agreements, etc. I know because I've been a part of this (and will admit to doing 1v1s / 2v1s / 2v2s) using the "gentleman agreement" rules of like pistols only, one bombsite, knife only, no high damage races. As long as both parties are making an attempt to do the objective + kill one another without purposely getting killed, it is legit.
Somebody can correct me if I'm in the wrong though. There's probably a better way to put this but yeah, what else are the people who are up early on east coast going to do, stare at the bots that make the server look populated?