In my experience it is a bit more than lack of understanding. Some people seem to have a "hatred" of computers and like to belittle those who use them.
I once met a woman who insisted that computers were nothing more than "dumb" pieces of plastic and metal and that anyone who used them was either a "lazy bum" or were "too stupid" to do anything the "real way" becuase the computer "did" everything for you.
C. P. U. Its not a big processor... Its a series of pipes!