Why do people think that introverts are rude or arrogant?

Because introverts feel less of a need to engage in phatic communication (or find it awkward and unnecessary), and therefore, don't do it as much, which bothers extroverts, who rely on it to keep tabs on where they stand in their social group. read more

The introvert may be perceived as rude and arrogant if all they do in a conversation is smile, and laugh without any reciprocated responses. People also generally like it when you show vulnerability. This means opening up, maybe even talking a little about yourself despite the fear of rejection or humility. read more

People term introverts as arrogant because they are, most of the time. Introverts tend to ignore people who do not interest them, even in social gathering. They do not initiate any kind of relationship anywhere. Most importantly, they do not show their talent in public which might inspire/help others. read more