"The roadway once carried between four and six lanes for motor vehicles, despite 88 percent of people in the area traveling on foot and squeezing into 30 percent of the space." And now Adams wants to give it back to cars?
Drivers complain about traffic (sorry im late, traffic was terrible), while pedestrians and mass transit users don't because in general, those means of transportation are less prone to delays (subways don't get stuck in traffic and yes busses do, but they have schedules).
They aren't city planners, that's for sure. When it comes to transportation business owners tend to be going off vibes and not much else. Who knows if the owners of Broadway have even seen their own numbers?
Previous generations of traffic engineers had a lot of arbitrarily held views of how things worked. Present day planners have different ideas. A lot of politicians still think that way though. Doesn't matter what best practices are if the governor is worried about imaginary diners.