Your argument seems to be that all formula is soy based. That is not true. People do forget that the choice is not just manufactured formula or breast milk. Human infants can be fed “formula” made from evaporated milk, karo syrup and water. For babies that cannot tolerate cow’s milk goat’s milk is often a suitable option.
Formula, as generally used does not mean evaporated milk.
Any milk that has been heated above body temp is hazardous.