I think you blokes are more than likely to be reacting to the colour, IE: dark with tan points.
The dog has no physical resemblance to a GS at all and like most around here they have an almost Kelpie (Aus sheepdog) look about them. Even the pure yellow ones have the same body characteristics.
Now if the dog was a pure yellow dog with that shape you wouldn`t even mention the GS name at all.

There is a big yellow dog hanging on the fence just up the road from here. I saw him fresh as but was too lazy to scalp him for the $120 bucks..Hes dry now and maggot eaten out and still worth $120 ha ha..
Anyway he is yellow as and the spitting image of the dog in the pic above.