Dick, thanks for the reply. at the heart of it I don't disagree with what you're saying, and indeed everything always is much more complicated than it seems at the surface.
I can and do control non ADSB aircraft every day that I work, I'm doing it today and will continue to do it tomorrow. I wasn't trying to argue against your points, I was attempting to put forward an alternate point of view in which our airspace is becoming increasingly busy and non identified aircraft use a significantly increased volume of airspace vs their identified mate.
I'm an enroute controller, and what I and my coworkers do often, I guess, seems a bit like black arts to some (as tower control is to me...), I was hoping to provide a small, non-inflammatory insight into some of the standards we have available to do our job to keep the rest of you in one piece.
Simply an alternate view to the issue...
Kieran