I have never seen a middle-aged buck without brow tines develop them later in life. That deer is 3 or 4 years old and about 16 6/8" inside spread. He would have been dead at my place if he had no brows his second year. I zoomed in on the little buck in the background and couldn't see any brows on him either, even though the camera angle is no good.
It's a genetic trait that you don't want in your deer herd. I use that term lightly not knowing, acreage, fencing, neighbors, etc. It may be a quite prevalent trait that you can't do much about.