

Except when you’re walking on a road, you should walk on the opposite side of vehicle traffic.
I take back my post, THIS is my hill to die on. Please note that it applies to any mixed use path where one type of traffic is markedly slower, so pedestrians on the road, obviously, but also walkers on bike paths.
I don’t know about ”most people in the workforce.” I’m in my mid-30s, and not only do I remember it once or twice from my childhood, I also encountered it once in 2013 (at a brewpub somewhere in New York). You’re right, though, that it becomes less of a thing with each passing year.