Actually, cblaisd, I doubt if it would work that way if the listing started out with the airlines alphabetically. Instinctively, new posters would get the picture and just scroll down the list to their particular airline and read and post there.
It would just be a more intuitive, user friendly arrangement. Those of us who have been around from the start, understand the evolution that led to the current positioning of forums, but it is very confusing for newbies.