Its something to get pissed about, but once you start killing their kills, not reviving them, letting them die, they'll stop.
What pisses me off is when you accidentally take somebody's kill and they run their mouth about it. One time this guy was talking about clan battles and shit, he was all "In clan battles, its not about who gets the kill, its just as long as the opponent is killed" So he downed somebody and he was also down so I ran up and curb stomped the locust. That guy started bitching me out and I go "Thats pretty fucking hypocritical of you, didn't you just say its not about who gets the kill, its about the opponent getting killed". The rest of the match, he kissed my ass.
