Growing up poor country folks in Oklahoma, I've eaten a ton of Poke Sallet. Poke Sallet is where you find it, and it seems to be everywhere. It comes up in our flower beds, garden and down by the creek. I haven't eaten any in years, though, just like I haven't eaten any squirrel, duck, rabbit, or possum grape jelly. Seems like us kids knew from the beginning that it was poison until it was boiled, water drained and reheated in fresh water. I always liked it; preferred it to Spinach. Today my favorite is Swiss Chard.
Perception and bias influence most things, including how we look at food.
It would be interesting to compare the nutritional value of traditional "poor" foods with that of the processed garbage that is commonly "modern" today.....
Rgds, D.