Just a general feeling I get from reading through various event guidelines:
The trend seems to resemble a game of telephone, stuff keeps getting added or changed but the original intent is lost in translation. Case in point, see the houston carnage guide. Few seem to recognize 7th as a rather complete break from prior tradition necessitating a start from scratch approach. From comments I have read in assorted places online, this extends to players as well. And people then point to the confusion and attribute it to the rules. The RAW to me are pretty damned clear though; the confusion is the result of poor reading comprehension and/or an inability to separate 7th from past editions.
So in answer to your question, I would say the latter condition often seems to be the case in large part.