I'm not sure that comment really addresses the high speed crosswalk entry concerns. Sure there are some people out there who behave like your story, but not that many (and should be addressed by losing their license). Even with the right of way, it's in a pedestrian's best interest to slowly enter the crosswalk and check to make sure the vehicles are yielding. Some states make it illegal to run into traffic or cross while distracted (phone use).

So yes, people driving should be going slow enough to avoid someone running into traffic. But then the runner should also slow to safely evaluate and cross.