Exactly, everyone thinks their style is the one and only "true" shaolin style. No doubt Sin The's teachers beleived this, too, when they left China, and he still believes it now.
I don't have a problem using the name Shaolin, because so many different styles do already. They have shaolin style in Vietnam, they use the Vietnamese word for it, thieu lam. Shorin is the Japanese pronounciation of Shaolin used to describe an Okinawan style. We all know that many, many styles describe themselves as shaolin, and almost none of them teach or follow a strict Buddhist philosophy as temple monks do, and most don't look anything like what is taught in the temple now. What has to stop is saying "the one and only authentic shaolin martial art, taught by the one true shaolin grand master". That's ridiculous.
Of course, the internal arts aren't "shaolin" by anyone's definition, and they're a part of the system as well (though it is probable that taijiquan has its origins in shaolin longfist). To heck with it, it's just a name. Maybe the internal arts weren't developed or practiced at the shaolin temple, but they're a part of this kuntao style, which was apparently called "shaolin" in Indonesia.
Whatever people call it, I just think that the fact that the art has come through Indonesia, and changed there, shouldn't be passed over like a footnote. It's the identity of the style, whether Sin The wants to deny it or not. It's something to be proud of, not hidden. Of course, to someone who's ethnic heritage was persecuted in Indonesia, being from Indonesia may not be something to be proud of. I can see why they may not want to give their home country any credit, or identify themselves or their style as Indonesian. But regardless of family and ethnic pride, it's the truth.
Indonesian Shaolin kung fu? Shaolin kuntao? Shaolin tao? Sin The's butt kickin' kentucky karotty? I don't really care so long as we tell the truth about where it comes from. and keep the training "real".
"I am a servant of the Secret Fire, wielder of the flame of Anor. The dark fire will not avail you, flame of Udun! Go back to the shadow, you cannot pass!"