I don't know if the fries are standard but they are over here and I think it is just a cheap ingredient to fill up the bread or tortilla. They compensate for the dryness by putting way too much sauce on it.

I believe it is only called a french taco because the first place it was served was somewhere in France. Honestly, it tastes so similar to a lot of other wraps that it is indistinguishable from other similar items.