Common Sense is the rule.
If you have low to none chances to win a round and just trying hard to farm valor making a server (which is an average 60 players) look at you for minutes and minutes you're having none of this common sense, and you get warned for that. You keep the ass act, you get removed.
If the flags bug out (again, about 3 in 5 flags bug), you're even risking more.
Atas tries an even more disgusting method to farm valor, during the round as long as he's engaging, no problem, it's his free time he's wasting.
But when the round is about him vs several enemy players (which is 86% of the times) and forces the full server pop to watch him try to farm this so precious valor to him wasting everyone's time, he gets the same treatment. Specially since he often avoids the flags and runs from them. Warn, and a friendly bump out of the server.
It's all about common sense, you're entitled to act like a dick, it's your freaking problem, but when you make it everyone's problem, you get the boot in the ass.