Long Hair and Legalism

Someone said something on the internet and Joe and Jimmy talk about it. Ok, it was Dr. Strachen, and he was calling on men to cut their long hair. Like a scene out of an 80’s movie. Does 1 Corinthians 11:2–16 teach that long hair on a man is inherently sinful? What was the real message behind Strachen’s post? Was the message lost in the way it was presented?