I completely agree with your friend's observation�most are, or have been, over-drawn. I believe it is lack of education of proper form that is the main cause of it�most just don't,can't or refuse to be open-minded enough to believe how much better their shooting will improve when their form is improved upon by having their draw lengths shortened to the correct length. I think initially it is just plain ignorance in this poor decision making because most beginning archers find it initially more comfortable to have their bow arm locked due to the fact that most pull way more weight than they should, or able to comfortably and that is how they learn (I admittedly feel in this category many years ago). A very significant percentage of archers out there have incorrect draw lengths�because that is how they learn, and when they finally get "fitted" correctly they are amazed at how much better they shoot. Also some are just so hung up on speed that they will not sacrifice that 1" in draw length as that will shave 10fps of their setup. As far as the brochures and ads, most of what I see is an angle that is angled to focus the attention on the bow and does not accurately show what the archers bow arm/wrist is doing as far as angles and what not.