As an adult, relatively big (1m85) who doesn't randomly run across a street but rather use solely clearly marked zebras I sadly have to report that I had numerous encounter with cars at a very uncomfortable distance to my body, some even touching me (not an accident proper though). I did have of course the occasional wave saying "Oops, sorry I didn't see you or care for slowing down, moving on!". When I say occasional it's probably once a month or more.
To clarify this happened next to a park with very VERY good visibility, a straight line without trees, where it's slightly higher speed than around. Namely small streets around the park are 20km/h, that avenue is 50km/h. It is actually such a problem a red light has been installed 200m further. I assume that enough cars refused to yield so that this change was made.
This makes me believe that unfortunately, even though MOST drivers are indeed able to safely drive in "Main avenues with clear sidewalks" there is still a non negligible amount from my experience as a pedestrian who absolutely can not and are a danger for everyone, kids and adults alike.
That being said, you have the right to believe that few accidents are acceptable if it allows most people to keep such a certain speed.