I'm curious as to what exactly you mean by this? The idea that a professional's opinion should always weigh more than that of an amateur, or that professionals are more important, or that professionals should always be considered separately from amateurs is fatuous and elitist. A professional is simply someone who makes a living doing a particular craft - in this case, there are many photographers who are technically professional yet produce crap work (I've lost count of the number of terrible wedding photos I've seen out there that were shot by professionals, and that's just one area of photography among many). You also get many highly talented amateurs who produce work that's on par with high end photography journals. Why differentiate between them?
I work as an artist in one of the most prestigious film visual effects companies in the world, working on A-list Hollywood films and have been doing so for many years, yet on the internet I see loads of kids and students who could teach even an industry vet like me a thing or two, because the fact is that if you work hard at anything, and you dedicate enough time to it, you can get really good at it. Whether or not you're making money from that craft shouldn't have any bearing on the worth of your opinions or contributions on an online forum - anyone with the right knowledge and experience can contribute in a valuable and meaningful way, regardless of their professional status.