It's not so much a concern as a point of curiosty for me.
It just may be a moot point - its debatability is obviously proven by the discussion that has occurred so far and while each of the contibutors may have started with certain opinions and perspectives, sharing them and considering others' in the process has probably led some to alternate assumptions and some of us full circle.
I personally was not aware that so many rounds of GCs were being used myself but contributions of such accounts in this thread have led me to be open to assumptions other than those with which I started. It may seem simple after reviewing all the comments, but I think all the comments contribute to somewhat greater clarity on others' positions. Before this discussion, I had my own assumptions to work from. I have gained a lot of insight from the discussion myself.