Yes, you have a point but when t's only a little in the front like Ian Hill, shaving the hair all off is horrible and I've seen plenty of guys doing just that. And Ian Hill looks real good, I think even better than a couple of years ago; more fit. There are options to combovers and wigs, like a good up-to-date hairstyle.
A man doesn't necessarily need to do a combover to not have to shave it all off. Rob Halford is one of the few guys that looks good just the way he is. Tattoos and all.
...Speaking of shaving, what has KK Downing done to the hair on his chest? After all, does he or does he not have hair there? Seems like Glenn Tipton has the same issue, let's hope it's not contagious