Barrett has become a "lightning rod" for controversy as a result of his criticisms of alternative medicine theories and practitioners. Barrett says he does not criticize conventional medicine because that would be "way outside scope." He states he does not give equal time to some subjects, and has written on his web site that "Quackery and fraud don't involve legitimate controversy and are not balanced subjects. I don't believe it is helpful to publish 'balanced' articles about unbalanced subjects." Barrett is at the forefront of exposing questionable aspects of chiropractic.