I agree with Hy - the signage was designed to be seen from the highway and the appearance of the signage on a postcard or other photograph is irrelevant.
I have a photo that makes my ass appear bigger than the moon, yet no one has based a calendar on my ass cycles.
But please, Hy, don't get compulsive about identifying/categorizing every particular type of falacy that gets offered here. That would be "Ex Pict Cornholio Speedwagon Addendum," wouldn't it?