Everyone brings their bias to this type of threads.. it is just human. The thing is that now the person from Nebraska (or any other landlocked place) that had to learn to swim in his 30's because wanted to be a scuba diver is communicating with another person from a coastal area that most likely learned to swim before learning to walk.
There's just no comparison to their perspectives. You had and have kids using farm equipment as soon as they could get to the pedals up there right?. Kids that live in cities that only know the city ways. Well there are kids here in the coastal area that pretty much live IN the water; snorkeling, jumping off bridges, free diving, fishing, surfing, kayaking, boating and doing whatever is possible to do in the water. Even here there's a difference between the kids that live right on the water and the ones 15 minutes away.
These kids each grow up and have their very different outlook of the world. Many years ago these people wouldn't mix or even know about each other, much less see videos of what they did last weekend .
Now you have divers coming from all these groups looking for the BEST way to dive. But their definition of best is not the same, for some it has to be the safest possible way, for others the fastest, or the most dives, or whatever. For sure the most hated and controversial way is the one that follows the mantra "This way works for me" Specially if the one following that philosophy insist in showing everyone that it does work for them just fine.
When the time comes for DD to pass, there will be people that insist it was his cavalier attitude and lack of good practices, specially if it happens while diving... instead of thinking that putting that much time underwater the odds of happening there were very high.