I don't believe SemperFi is saying you must be a lawyer to understand the law. I believe he's saying that if you are going to issue opinions on the law as if they were settled law, then you should base those opinions on the law, and not what you think. The law school jibe is making the point that you are giving an opinion, but not a legal one.
But everyone should agree with my opinion!
No haha, I get what you're saying. Like I said, I don't claim to have any amount of legal training, and I definitely see where you guys are coming from. I just disagree with the laws themselves, not with the fact that they are in place and the government is enforcing them.