Egotism

The Egotist is actually a collectivist for two reasons.

 First, he is convinced that he is superior to others, and feels that they should realize that fact. He actually is only their equal, and his shallow, small-minded thinking is exposed by his comparing himself against all others, he reveals his herd mentality. He is endlessly obsessed with his ranking  in comparison and contrast to others. The self-assured egoist is mostly absorbed in pursuing and fulfilling his own interest. He is indifferent to such irrelevant time-wasters as ranking himself against others, a social construct. His enjoyment of his individualism is so deep and secure  that  how he stacks up against others is completely beside the point, an immaterial distraction.

Second,  his rude insulting behavior is validated by having an audience to direct it to. This enterprise is a social endeavor, against revealing that he is an collectivist, not an egoist.