If you are an example of higher educations, they are probably right. Didn't you have to pass a reading comprehension test or take a course in basic logic? Believing (rightly) that many of our colleges and universities are little more than overpriced propaganda factories which produce political malcontents who do not contribute to our society in a constructive manner, this view does not portray a lack of value in higher education, nor does it represent a "dumbing down of the USA."
I went to college, I now have a net worth over 5 million dollars. I enjoy giving back to my community and nation for my good fortune.
College works if you work to make it work.
Too many Trump supporters don't want to work at obtaining the skills required in today's work force. Those skills can be obtained through higher education and trade schools.