This is a pretty interesting solution to a problem seen in older areas. Here in Oklahoma, where we really, really like our PLSS grid, this type of thing happens only rarely but back east — say in the Boston area — it’s common. And, in fact, several stills in the article are of Boston and Cambridge. Cambridge has even legally declared some streets as “shared streets”.
What’s interesting to me is that it’s counter-intuitive, that taking out signals makes things better for the motor vehicles as well as the pedestrian. It is possible that some motorists have changed their route to avoid this intersection, but I only have this film to judge from and certainly don’t have before and after vehicle counts to show what’s happening regarding vehicle movement.