Not at all, high magick is cerremonial magick, low magick ismsympathetic magick. They are jsut two different methods. High magicians are usually more spiritually inclined, however many low mahick practitioners are spiritual as well.
I would also say that the philosphy ajd tue practicies can blur into one another. Those people who dabble in magick usually dabblenin low magickmas it is easier and much simpler to get a spell to get what you want. High magock requires much more reading!
In short, it is like comparing zen buddhism with tibetan buddhism....people have their own preference.
Some ignorant people on both sides of the fence used to look down on ome another, but that has passed.