Weasil the problem has arisen because of the debate about the need for radio calls, radio congestion in the local area and funnelling aircraft in the LOE. At this point in time there have been (to my knowledge) no accidents in the lane.
Better to have a discussion before than a post mortem afterwards.
In addition the question about radio calls in the LOE, everyone at the Forum also got to hear Mike from BASI's talk on how effective "see and avoid" sometimes isn't, especially in high traffic areas.
When I hear a radio call in the lane it lets me know where other people are and it gives me a better chance of spotting them. Anything that helps me make the flight safer and increases my chances of avoiding trouble is not a bad thing. But the call, if it is made, should be short, to the point and accurate. I've heard more than one or two calls where the position report appeared to be speculative!