I don't follow the BA forum, so I was referring to this AA thread.
I can now see what you mean though. It's just that to me baggage=carryon (never ever check bags, unles flying with Viajera) so when I learned that BA was no longer being so nazi about carryon rules my interpretation was/is to consider it good news. Now that I see the better carryon rules come at the price of worse checked luggage rules I can easily see why this would be considered by many as bad news.