Since you said:
Well, this is what I've gleaned from many online presumably science-based discussions of the information. THEY say this, I get it from THEM. The vast majority are neutral, many others are deleterious
it would follow that the relevant meaning would be the one used by "THEM", which would be the standard definition, not your idea of what "THEY" meant. It seems that in reality you are the one trying to change meanings by changing definitions.