Some do, some don't. Some have equipment that doesn't see much daylight until hunting season. Lots of folks go on special hunts that they might only do once every few years, or just once period, and need special or extra equipment for it. Lots of us don't shoot broadheads much, if at all, during the summer months.
Whatever the reason, there's always a fall rush. I know I used to be one of those that would often be placing last minute orders because I'd forgotten to get it all together and do an inventory, replace what had been used/broken/lost, etc.
Chad