Of course, the most obnoxious folks are the group that YOU don't belong to. It's only natural. I have been all three, driver, cyclist, and pedestrian, and I gotta tell ya, they can all behave badly. There are fewer cyclists than either drivers or walkers, so maybe they just stand out more when they act like fools. It's not even close, pedestrians are the worst. Any busy intersection, there is never not at least one person doing something stupid. Standing in the bike path, or standing three steps off the sidewalk when they don't have the right of way, greatly endangering themselves and others. Or dashing across the street as the don't walk sign counts down. Oh, and the phone!! Drivers and cyclists aren't the ones that can't put the phone down, that's pedestrians.
Drivers are rude, and will block the box for no reason, but they don't do the dumb stuff you see people on foot do. The biggest problem I see are drivers sitting in the middle of the avenue, blocking an entire street from crossing. So dumb. They literally gain nothing, just wind up waiting at the next light.
They have more penalties when they behave badly, and traffic actually prohibits them from a lot of dangerous situations. Cabbies are much worse, especially late at night, but mostly only to other drivers.
But there are no penalties for stupid walking. Jay-walking? No one's afraid of that.