It seems to me that you just invented out of whole cloth the notion that the surrounding roads are supposed to form a reference grid by which you must interpret this, in order to give us a haughty lecture. Without that, the distinction you want to draw based on orientation doesn’t hold up at all.
Quadrulpe SIGH
Yep, I made it all up to support my point. Just like I made up this article and Google map image. Ohhh…those darn Nazis were still at in 1967 and they fooled the U.S. Government and U.S. Navy!
Reference: http://content.time.com/time/specials/packages/article/0,28804,1881770_1881787_1881780,00.html
Reference: [Google Maps](Google Maps hl=en)
My Google-fu is Strong!
To be fair, the swastika trees are real!
https://en.wikipedia.org/wiki/Forest_swastika
No Google-fu on this one, saw this on What on Earth?
Oops…wrong Google Maps link. Corrected: https://www.google.com/maps/place/Naval+Amphibious+Base+Coronado/@32.6761201,-117.1599008,883m/data=!3m2!1e3!4b1!4m5!3m4!1s0x80d9532810e696df:0x8377877a0e4f0033!8m2!3d32.6761156!4d-117.1577121?hl=en
I must have been using Drunken Google-fu before! 
Is there anybody left who doesn’t know that the Nazis adapted/appropriated the swastika for their own use? It’s not a shocking revelation and it doesn’t change the modern connotation of the symbol.
In the entire catalogue of evil shit the Nazis did, perverting the swastika (which, by the way, is so ancient a symbol and has so many variations that no religion or ethnic group has any kind of claim on its original provenance) probably ranks somewhere in the back half.
quintuple SIGH
Unfortunately, as long as there are people that beleive that 9/11 was stage and the Lunar Landing and Holocaust are fake, there are those who think the swastika/manji are the same a the hakenkreuz.
Heck, I’m sure there are some in the South who sincerely think that an racial uprising will revive the Confederate Army! Ohh…I forgot about the KKK!
You have posted photographs that perfectly refute your invented claim that the only valid way to interpret the symbolism of an object on the ground is to use use the surrounding roads as thought they were a horizontal/vertical reference grid. In both of those images the surrounding roads are oriented diagonally.
This has nothing to do with whether the architects intended Nazi symbolism or not. I have no idea about that. I’m speaking solely to your diatribe of patronizing sighs derived from an unfounded assertion that we must interpret the symbolism based on the orientation of the surrounding roads.