How is the ending of "The Mixer" ironic?

It is ironic because the narrator thinks the Shy Man is a well-respected, "important" man, and that is not at all what the policeman thinks. His misinterpretations show that his observations should not be trusted.

dioneo just might be like one of your friends. he is a good looking guy that can say whatever he want and get away with it. he's brings life because he can sing and play the lute. he is also dangerous because he can convince you to do anything for him because his wit is so sharp, you can not resist. dioneo is determined to take the next logical step and initiate a small campaign for freedom of speech. he does this by begging to be released from telling stories that conform to the daily theme. then, during his own time, he chooses a themes that are scandalous and he gets the response he expects.