Godwin's Law doesn't really apply when they are literally calling themselves Nazis.

…what does their age have to do with anything..? If anything, would not them having lived through the era when Nazi Germany existed make it more likely for them to be Nazis..? And even then, waving Nazi flags, doing Nazi salutes and unironically saying "Heil" seems like enough requirements to be, you know, a Nazi. Like, they did not even try to hide that fact, you know. They wanted to let people know they are Nazis.