I've only been reading up on home brewing for a month, and certainly don't subscribe to the "noobs take everything they read on this site as gospel" argument. I don't think you're giving people enough credit....the vast majority aren't stupid, and will in fact be smart enough to know they're reading opinions, not facts. And those who do take it for gospel are dumb enough to deserve what they get.
That being said, I do give a lot more credit to practical examples, i.e. somebody asking a question about brewing temps that gets a reply that says "I've fermented many brews at temp x and the result was y" is a much more useful response than someone saying "You can't get good beer brewing over temp x".
The latter tells you nothing...it could be a novice regurgitating something they heard or read somewhere...or it could be a long time brewer speaking from experience. But unless they back it up with the facts, its best taken with a grain of salt.
I understand the AHB'ers out there who've posted thousands of messages on this forum are probably tired of saying "Mate when I first started out I didn't pay much attention to temperature control, and my first few brews were in the high 20's. I drank the beer, and thought it was ok at the time, but once I started keeping the temps steady in the low 20's my results improved significantly". THAT is the sort of info "noobs" can really find useful.