AHAHAH! I don't feel at all for that guy. He loves it and I appreciate it.
He does it because he expresses himself doing it.
I have done all sort of things in the street. I go out with toys, wigs, cosplay costumes. I recently recorded a video where I just dress up and walk around and a guy is behind me recording. People stare.
I don't care.
Drinking in the street, singing and dancing. It makes me feel happy. I once dressed up as snow white and took a fish foot massage and plenty of people watched me.
I appreciate shared happiness. It is not even art, it is rebellion!