I have read 5 deferments, but the number doesn’t matter. I think some of his statements are disingenuous about “support”, much like other areas he claims to support now while being against a short time ago. The whole thing seems a publicity stunt given his background for the absurd.
He has legitimate deferments for each year in College. Were you in college back then and/or in Vietnam? I was. One America News is carrying it live. A fellow SF man who lost his leg is speaking. He was with 15 SF types who killed 200 Taliban.