pedestrian crossings are dangerous bro, you know there's a very good chance that one or more vehicles won't stop so pointless trying to blame the coppers. caveat emptor and all that.
I've used them occasionally in Bangkok but only with extreme caution, ie. not passing a stopped car until I've poked my head out and checked for oncoming vehicles that look like they might not want to stop. that still doesn't guarantee I won't get cleaned up by a speeding motosai that might pop out from behind a van or a bus.
what amazed me was that each time I used the crossings the other, mostly Thai, pedestrians just looked straight ahead as if the green walk signal gave them some kind of invisible force field.