And as @Gendgi pointed out, the sign does not have safe pedestrian access, so further discussion of the merits of this particular neighborhood sign are moot.
Since a suggestion was made that it might be accepted if resubmitted, I want to share this comment about resubmitting from staff: Can Niantic give a warning or a ban if you make an appeal with no additional useful details or you accidently send a same nomination again? - #2 by NianticAaron
Any comments I make are to help explorers be successful in their nominations. I empathize with the frustration of a rejection.