Both are right and I side with neither.
The street photographer has to take his chances with people, sometimes even making them down right uncomfortable for a shot. Sure is rude and creepy and even anti-social, but one should know when to push it and be ready for the backlash, especially if he's a "repeat offender". Not all street photography can be "legal" portraits of consent.
At the same time, it is rude and creepy and can be even offensive at times. So people have the right to complain.
I am often shy and respectful of others, but in a public setting, I sometimes break the social norms and etiquette for a picture: it could be a simple stare while I compose in my mind or focus the Hasselblad, or even ignore a request to stop. On the latter circumstance it has been always a whole scene and never shoved the lens in someone's face.
One has to take his chances and gamble with society when out photographing in street and it has always been like that. I don't think most subjects cared for Weegee or everybody loved Winogrand or Bresson for example.
Unfortunately, it seems now, the law's vice is closing in on photographers and society is getting more and more impatient and paranoid. Arrests are being made, film and memory cards confiscated, edicts drawn for banning are written as society is getting slowly fed up of people with lenses. Its usually the stereotypical photographer with the big camera and big lenses that is targeted and most often, users of small compacts and cellphones are not so much bothered, even if the latter has been under control for some time. Even though the public and authorities object to the actual content of a photograph and the subject matter, especially if it someone's face or "terrorist target", it is mostly the act and the outward presence of a photographer that lights up their alarms. Its so much easier and stealthier to take upskirts or snaps of airports with a cellphone, yet these "crimes" continue to pass unnoticed and unpunished.
Unfortunately, when a story like that reaches the common media, or even a focused blog, it stirs the pot even further and it becomes more and more difficult to do photography outdoors, especially in an urban and crowded setting. Its not difficult to accuse one for being a pedophile and ruin his whole life even if he is innocent, or of being a terrorist, or whatever. The laws already are in place, the public's opinion views most as creeps and paparazzi and cases are being constantly documented.
I remember a well known Greek Magnum photographer telling me how difficult is to find places anymore where people have a purity and innocence that doesn't look with suspicion the photographer. Nowadays its not "stealing someone's soul" but "what you're gonna do with the snapshot", what kind of profit you will make with someone's face or the state's building, be it money, fame, perverse pleasure or terror plot.
Its hard to be an artist on the street anymore, unless you sit in a corner with a music instrument and a hat for change.
Btw, thanks for the link of his Flickr page. I liked his work which is clear cut street photography, not unlike anyone's else who's been out on the street with a camera photographing people in their environment. Some look like posed portraits others are candids and some annoyed stares are to be found. One takes their chances.