If you get called a camper, you might be one.
The only thing that matters is if your team wins. If your team keeps winning and you maintain a high kill count, fuck 'em. If they were better than you they wouldn't be calling you a camper and they would cap your ass on a continual basis.
If your team is winning, you're a good player. If your team is losing and you maintain a high kill count, you're a camper.
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