The karma system, at least in its current state, simply provides a tool for bad players to punish others who don't play just as poorly as them.

That doesn't matter, if you don't fly all the way over to the radar cruiser spamming the AA request immediately, you'll get reported. The carrier may actually be working to scout a dd on the far side of the map for a push that lost their own scout. Because of this, every player on the team expects the carrier to be supporting them, and them alone, with whatever they think is most important. Carriers fill multiple roles across the entire map. You get a similar problem playing a carrier. They just want you to make things easier for them, and if you don't, they'll spam report you. It doesn't matter that battleships aren't really going to be good at spotting destroyers around islands and will almost certainly die without doing any damage or spotting for any amount of time. What they want is a sacrificial scout that isn't them. If you don't do it, they and their division mates will just bad karma bomb you. You find yourself too often in games where your battleship is staying back from an area because of one or more enemy destroyers lurking behind islands and being ping spammed by someone who expects you to simply sail straight into them. A prime example is when you don't immediately throw your ship away to save someone who made a chain of poor decisions and is now going to die. The Karma system only serves to give toxic players a way to punish people for not doing what they want, or for simply outplaying them.

World of warships karma system