OK and I said maybe strap-ons don't exist because she did not even consider the possibility they were using one and Alex doesn't know that she could buy a strap-on to fuck Sam's butt. I'm not sure what point you're trying to make here
The point I'm trying to make is that Maddison made her decision based on factors that we don't know, as I said, she could just be fixated on futas and she made her decision based on wishful thinking.
Or she did make the decision based on the fact that Jade is a jacked amazon of a human being and you don't come across that often with women, while also having the general populace constantly feeding people information
about futas because they're perceived as "evil". I mean hell, this actually makes the most sense, if you've grown up constantly hearing about "big bad futas" and their defining characteristics, assuming Jade being one and not using a strap-on makes sense as Maddison doesn't know about Jade and Julias relationship or anything about them most likely.
You can't really insert real life logic in a fiction world in terms of their society and Maddison's decision, as their society seems permeated with carefully propagandized information against futas being blared everywhere so any child growing up within that will likely be more inclined to think that someone is a futa even if they lack information.