When we visited Arizona, virtually all the pre-dawn joggers (and nobody wants to jog once the sun comes up, so there are lots of them along the water channels) were religious about reflective gear and most wore front and rear lights or headlamps.
I don’t understand why that ethic hasn’t taken hold here. Great that you guys are handing out reflectors, cussing or not. After a point though, I suppose all we can do is light our biking selves up really well and hope the runners take the hint?