You can see the glass as half full or half empty. Either there are always new people coming in who aren't that experienced OR just a bunch of 'lazy' people who don't give a continental about what they post. Why assume the latter? There's nothing wrong with taking pride in your craft. Why bother with it otherwise? OTOH, getting peeved because others don't share your talent/dedication seems rather self-defeating. Better to feel good about your own skills than to bemoan the status quo IMO. There are places like CG Whatever that seem to weed out the rabble more but Renderosity is pretty much open to anyone who can see lightning and hear thunder.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken