Where did Cam or anyone else say he was a professional? I don't think that happened. He does know his stuff though when it comes to certain animals. The salamanders for example. He may have been a little harsh but it's because he cares about your animals. You should learn from the experience and better your care with it. If you're so sad about selling your animals, don't do it. Learn from it and you and your pets will both be happier. You shouldn't get so bummed out about what people say on the internet, you should take it as a challenge and prove to yourself and him that you can take care of the animals.

Atleast you're here on the forum trying to further your knowledge in their care, most people don't even do that.