Only lawyers can give legal advice, big difference.
You can represent yourself in court if you want to (generally, you don't) but if you want to offer that service to others, you need to be a licensed lawyer. It is the same for many professions.
You are saying exactly what I'm saying, only with different words. As life goes on, this is a trend I get more and more acutely aware of: people bias, opinion and values make them re-interpret what others say to make it fit in their already made up mind about what the conversation is about.
I was saying that not knowing the law is not a defense yet the laws are so complex that an expensive expert that dedicated all their study to the law is practically (as in, yes, you have the option to not use a lawyer) required in court.
It is not the same for many profession. In no other profession are non-experts expected and required to know the matter.
You can represent yourself in court if you want to (generally, you don't) but if you want to offer that service to others, you need to be a licensed lawyer. It is the same for many professions.