Sparkly – where does insulting fit in? I don’t think that someone is qualified to teach halacha unless they sat and learned halacha in depth for many years. I was hired to teach halacha in a seminary when I was 22, but I refused to do it until I had learned first for many years. I don’t think a 22 year old should be teaching halacha! I also wouldn’t go to a doctor who hadn’t gone to medical school. Would you? Is that insulting?
You have said that being a pharmacist requires two years of schooling. You need to know a lot more to teach halacha than you do to be a pharmacist!