Well, now ... on my AOW deep dive, I require my students to do an OOA drill with me (me being the OOA diver). They are expected to do so while hovering, in as close to a horizontal position as they can manage. So far, none of them have been wearing a long hose. None of them have had any particular difficulty doing this exercise either. Certainly it's easier with a longer hose ... which is why I wear one. However, the importance of the skill isn't the gear configuration, it's the ability to do the skill while keeping a clear head, controlling your breathing, managing your buoyancy.
No ... it's not DIR. And I understand (as you well know) that's a non-issue. My statement was about the perception of DIR, however ... and the perception is what creates the controversy. I was attempting to point out where it comes from, without making any judgmental statements about whether it was right or wrong.
I really don't care what you call it ... all I care about is that you can safely respond to an emergency, and deploy the equipment that you have ... and that you do so with the confidence that comes from having developed and practiced solid basic diving skills.
... Bob (Grateful Diver)