Walk the walk, before you Talk the talk.... most who have walked a long trail, don't run their mouths... unless you ask them for help... then they will genuinely help you best they can.
For the most part I would agree with that statement, with some qualifications. The "true-believer" hikers you meet out there, the ones who practically live on the trail, they meet your assesment 100% of the time. You know the ones I mean. The gods of the trails. The Jesus-bearded man who emerges from the mist type.

The rest of the long-distance hiking community is lightly sprinkled with those who have travelled long distances, but it hasn't helped their personalities. Gear-snobs are not the only elistists in the hiking community. There are distance-snobs, difficulty-snobs, etc... I'd wager everyone has met at least ONE seasoned long-distance hiker who either is a distance-elitist who looks down on those who haven't racked up some tier of distance, or who looks down on dayhikers, through-hikers, weekenders, and other short-distance hikers. Usually, these people have underlying personality issues, so the behavior is to be expected, but still... I know several who fit the bill (nobody around here), including one who completed a full AT hike. No group of hikers is immune from the scourge of elistism.
That said... I think the sourge is worst with regards to backpacking, specifically because there is a gear element that is so much more emphasized in addition to the accomplisment element.
But then... We really are beating a dead horse here.