1) I doubt it, but at any rate Joseph made the argument “nowadays” perhaps it made sense centuries ago.
3) Why isnt it practical? The same way we have davening hats and jackets (and some have gartels) we can easily have ties. To make matters worse, when I was in yeshiva a guy wore a tie and the mashgiach told him to stop since that wasnt “the Yeshiva’s tzura”