I'd love to answer this but first...
Beatchanter? Seriously? Royce and amazing physical specimen?
We must have different ideas.
Kevin Randleman is a specimen, Randy Couture is a specimen, Carlos Newton is a specimen. Those are natural athletes. Royce has had to work hard to be where he is.
The whole point of Royce being the UFC (as opposed to RIckson,Rodrigo, or someone better or even more athletic) was that he was one of the smaller, less genetically gifted Gracies. It was to further emphasize the effectiveness of Gracie Jujitsu, that you could take a smaller man, a less athletically gifted man and still beat other arts. Royce Gracie is 6 ft, 170lbs. There is nothing athletically special about him. That was supposed to be the point.
Compare this:
http://www.cdn.sherdog.com/_images/pictures/30/30142.jpg
to this:
http://www.fcfighter.com/PICTURES/MISC/rev0207-coleman-randleman.jpg
http://www.fightmarket.com/images/photo_images/13.jpg
Anyway... to get to the question.
The problem with the Internet is that it's anonymity protects people, and allows them to voice opinions that they probably wouldn't otherwise.
The main people who are elitist and bash other styles mainly comes from a blind following and belief in their own art. Some of that has been passed down from instructors, some of that is just very entusiastic students, and some of it from people who have invested YEARS into their art, and have a close mind about anything else.
Personally I don't think there are any bad arts, just bad training principles. I think any technique you learn is another tool in your tool belt. But it is up to you to figure out how and when to use that tool.
I think certain training principles are more effective than others. (Resistance training, hard sparring, competetions, practicing your technique at full speed against a resisting opponent in short) I think that even I can be accused of generalizing at times, as certain styles lean away from those type of training principles.
I think that anything when trained the proper way can be effective. It sounds like you have a great school, and you are fortunate. As others have said there are way more bad TKD schools than there are good TKD schools. And many people instead of changing the way the do things when shown the effectiveness of other things, will turn their back and simply put down something else out of ignorance and pride.
Because when it really comes down to it, 80% of what they have spent years learning would be thrown out the window if put to the test. People would have to completely modify their style. Instead of seeing this, embracing other styles and actually being effective, they feel the need to justify their time, and do so by simply saying that the other style(s) is this, this or this, while their style is that, that, and that.
Truth is no one style is best, you should be prepared for any realm of combat, and should take as much as you can to add to your arsenal, and spar it under as few rules as possible, then do it under adrenaline against a stranger in tournaments, competetions, or fights. Then that is as prepared as you can get.
Glad to hear you have a good place, and have a good attitude, don't let others jade you towards that. Some people just would rather bash what they don't understand because of the investment they have made (time or heart wise) in their own art.
Hell 3/4ths of the people posting on here are just starting Martial Arts and think they know what they are talking about. They say things their own masters would never condone them saying. Then there are people who just have "ideas" about Martial Arts, they may have dabbled in a few classes here and there.
So I would say generally the people who do the style bashing are the ones that actually have the least to say.
Best of luck to you, congrats on having an awesome school.