Who is, or is not, considered an asshole is really up to your tender wittle feelings, and perception of those who are offended by others and their actions. Whether your pal, or a complete stranger who does not know you from Adam.
Those most consider assholes simply do not care. Whether it's because they're selfish, lack apathy, sympathy, or whatever. I do not think anyone actually "tries" to be an asshole. They simply have certain personality traits where they do not give a flying fuck about the opinion and feelings of the fry cook, complete strangers on message boards, or alike.