If tomato juice has antiviral activity, is that why a disinformation campaign was started by the interlopers long ago to make people believe that tomatoes were poisonous?

That is not the case. The reason tomatoes were discouraged through disinformation is because they are easily grown and are a nutritious source of food in the diet. So it was simply a heartless and cruel form of propaganda to deny people a ready source of nutrition that is actually safe and beneficial.