I'll take it point-by-point ...
Some, perhaps ... many of us would rather inform a diver than try to scare him. Many new divers are curious about this stuff. Some get into trouble trying things simply because they don't know any better. "Scaring" people ... especially people who are attracted to "thrill" activities ... only encourages them to do something. It's not a good approach.
No you don't. No it isn't. DIR has nothing to do with deep diving ... although it is one way to get trained to DO deep diving, it's far from the only way. Nor is DIR or any other agency relevent to this particular topic.
There's nothing "crazy" about doing deeper dives ... you just have to be educated about the increased risks, trained in the skills needed to deal with them, experienced enough to handle them, and equipped properly for the needs of the dive profile you're planning. There are no safe shortcuts ... people who take shortcuts invariably get into trouble. Those who make the effort to learn the skills and mindset needed for deep diving are some of the safest divers I know. Deep diving is all about proper planning and preparation ... and that takes knowledge, self-discipline, and some equipment that a typical recreational diver wouldn't be familiar with.
Glad you made it ... perhaps if you related how you got there we could take a better look at what happened, and how you could have avoided it. Might be a relevent way to shed some light on the topic of this thread.
Some are, most aren't. Same can be said for divers trained by NAUI Tech, TDI, IANTD and a host of other agencies. Technical diving tends to attract alpha personalities. It's not an agency-specific issue.
Irrelevent.
Gear is the least of the DIR approach ... it just happens to be the part that most Internet divers like to talk about. Most tech agencies use similar gear configurations ... NAUI Tech, for example, uses a configuration that is identical to the DIR setup. The major difference is that DIR shows you how to adapt the setup for recreational diving (i.e. for a singles rig).
Nonsense ... when I took my first DIR class one of my dive buddies (Lamont) had about 25 dives under his weight belt. I had over 900. Frankly, he did better than me, because he didn't already have some ingrained habits that needed to be retrained, like I did. The "entry-level" DIR stuff is often easier for the newer diver than for the more experienced diver.
Assuming that those comments are back on the topic of deep diving .. I agree with you ...
... Bob (Grateful Diver)