Actually, if a person isn't qualified to speak on a subject, and said subject requires an education, pointing it out is a valid argument.
Just about everybody on these forums are not actually qualified to speak on most issues. Most are just regurgitating others thoughts.
Some people think that just because they ally themselves with a certain viewpoint that they automatically have an advantage. Like a certain someone who talks about critical thinking a lot, but I have yet to see them actually execute any.