It's ironic because my BIL worked for Central Soya years ago. Twenty two of the twenty three food scientist had come to the conclusion that soy is NOT good for people. The company fired all twenty two and replaced them with kids right out of college who would do as they said.
Because "everybody knows" that "soy is good for you"... Just like "everybody knows" the "dangers of man-made global warming"... That DDT is very harmful to people and must be banned... and so on and so on...
"Conventional wisdom" formed by incessant repetition in the media taking place instead of hard science and common sense... Fortunately it seems to start slowly going in reverse as people start distrusting the agenda of politicians and the media more and more.