Welcome Bob
I've just read my intro and realized how arrogant I seem
Actually, I didn't think the intro was arrogant at all! It was one of the best intro's that I've read for a while and I don't disagree with anything that you wrote, maybe I have just a few different views but I see where you are coming from.
I often think when seeing some AC routines that people don't practice DL's too much because of the performer believing them to be technically easy. You do see a lot of sloppy DL's being performed and I wonder if there's a mental barrier where inexperience suggests that it can't be that difficult to lift x as one (trying to be careful of exposure here) so therefore I'll practice other things instead.
I've used a DL a lot over the years but have recently been substituting it where I can with a top change after seeing James Brown lecture and I've been surprised at how invisible it is to the specs, yet it achieves the same result in many situations. Like so many other things in magic, you just need balls to try it
Anyway, welcome again

Member of the Magic Circle & The 2009 British Isles Close-Up Magician of the Year
It's not really an optical illusion - it just looks like one!