I get what you're saying on some level, but there's a fine line between friendly ribbing/banter/kidding around and being a straight up jerk. For instance "haha, you can't handle my awesomeness, chump!" vs "god you suck at this, wtf were you thinking, moron??" One comes out of playful banter that naturally comes from competition, but the other comes from anger and frustration. With text chat that can be hard to differentiate sometimes, in which case it's probably best to heir on the playful side so things don't get miscomunicated.
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