As a pedestrian that “walk before green” light is super rad. What I imagine it is targeting is letting pedestrians “win” and get into the street where they are more visible so they don’t get ran over by people making left or right turns into them. If you let the cars light “win” then people will immediately turn right and “cut off” the pedestrian.

Dunno, just a guess. My city started doing this pattern a few years ago and I am very curious about the research backing it up. It does make me feel “safer” crossing streets at busy intersections. But I’d be curious what the actual rationale says about it.