...Once again, a lot of the noise you're hearing about it being "dangerous" to emulate any of the DIR techniques is from recent fundies grads that don't really know their ass from their elbow. ...
Straw man argument. Nobody was saying that spear fishing is so dangerous that it shouldn't be done. The point was, that when we talked about pony, then we heard "no, it's so bad, it's extra equipment, bad habbits, it's against DIR, against GUE, shouldn't do it". Yet all is proposed is to sling an extra small bottle. Then the spearfishing was brought up. "Now what about spearfishing?" The answer is "ow, that's fine, just sling a spear gun and you are absolute fine shooting at 80 pound fish, it's absolutely according to DIR/GUE, becuase DIR is just about BP/Wing and long hose".. But anybody with half brains will sense that something is wrong with this logic. Obviously shooting at a marine creature is "more dangerous" than just slinging a pony.
Your criticism if the new divers also isn't necessary valid. One could be diving for 50 years, worked everything out, perfected his diving skills. But he may not necessary follow the trends. The technology is improving, but because that diver already "knows everything better" isn't following it. Yet the new diver will learn the latest so advices from the older diver may not be suitable for the younger and not necessary the older diver will be "right". One GUE instructor told me: "You know who are the worst students? The instructors and those with thousands dives. They are opinionated, they "know everything". They are already built muscle memory for another techniques, they have hard time relearning, they argue. Yet the best are the fresh divers - they are empty, they are ready for the fresh knowledge". Also the newer divers are free from dogmas and tend to ask questions experienced divers were asking 40 years go. The answers could be different back then.
On the side note. Why GUE often call them "GUE" but not DIR.. They explain that on their web site. It's because there are so many different "DIR" methodologies and from GUE point they are not necessary "wrong", but different, so they suggested that using GUE instead of DIR is preferable to avoid confusion with another DIR techniques. UTD is also DIR. Nobody is "righter" than the other. But I may assume that people who "know everything already" aren't necessary following the web sites, trends, news anymore.