General Discussion

this particular variation of the common skull and crossbones artwork has special significance connected only with Nazis.

I don't believe it.

Once somebody has dug up some obscure references to that, we are now flooded with people who "knew it all along".

I don't believe it. Maybe you did know it, but I find that highly implausible.

I also find in implausible that a person would want to show off his Nazi colors, yet would choose a symbol that nobody knows about, not even most modern American Nazis.

What I find plausible is that a soldier who did 4 tours, living 24x7 with some of the most radical people in our society, many bordering on sociopathy and PTSD, would go to a tattoo parlor and say "That one looks cool. Let's go with that." And if I thought he was still that person 20 years later, I would not support him.