I find it repetitive and without any use in digital photography, at least some cameras have quite dark back lcd designs, causing no obstruction in night photography, has much more information, the menu thing is really not a thing when you do the same settings on the back lcd with the speed and ease of the top screen,since you use the same buttons.
I've used Nikon and Canon in film photography, nowadays I use Sony DSLR and I don't miss a thing about it. (yes, flame me, I use Sony, I like their pro entry level overall quality and price, besides, I had a huge range of minolta mount lenses and by the time I also had lots of bayonet adapters for other lens brands).
I think its just an anchor from film photography and makes no meaning in having it.
I even sometimes in nightshoots, use a 7'' screen attached to the hdmi to do precise focusing. BTW, imho, in nightshoots, you don't really need our eyes nightvision, instead, dealing with cameras sensibility and behaviour makes a lot more sense.