Pretty much this.
The raiding playerbase has been made into some kind of boogeyman by the people on this message boards.
It's pretty sad, too, because it's a case of people not really understanding the real problem. People use the term "elitist" to describe the people who lock jobs in PFs, or monitor parses like hawks, or demand everybody adjust to their catered strats, but those are just assholes. In reality, you're never actually going to see a legitimate elitist, because most of the time they don't have any actual interest in ever sharing a party with you. I don't really consider myself all that elite, but even I wouldn't be caught dead in an EX primal/Savage party without at least 3ish of my friends there to pitch in. And in the event that I do run with randoms, I don't really waste my time arguing about mistakes or calling people out. Expecting randoms to perform up to my standard is unrealistic, and when you accept randoms into your party, you need to come to terms with the fact that you may end up needing to pick up some extra weight. It comes with the territory.
Assholes give the raiding playerbase a bad name, but even to raiders these same players are still exactly that: assholes. The difference is that people who raid will roll our eyes, kick them, and move on. Meanwhile people that may just be trying out content at that level for the first time, may not have statics, or may not be prepared for the burden of playing at that level end up having an entire chunk of the playerbase negatively tarnished in their mind off of the actions of a few bad apples.