It's a spin-off of "FCK AFD" which are stickers widely used to oppose the most popular far-right party in Germany. I think that's where the design came from, feel free to correct me though.
I'm pretty sure FCK NZS and NZS BXN existed before FCK AFD stickers. In fact, the AFD one is an outlier, because it doesn't follow the "remove all vowels" rule.
There's no real equivalent of "to punch" in German, usually you'd use "schlagen" but that means to beat in general. And then "Nazis boxen" is a Kangaroo thing.
Also you'd be hard-pressed to find box wine in Germany. Sangria, yes, but not wine.
It's not really new in the sense that it's the same ole "dress old symbols in new clothing to circumvent the ban on use of those symbols". I think the HKN KRZ thing came after Londsdale, the clothing producer, came down quite heavily on Nazis abusing their brand (If you take a Lonsdale shirt and wear a jacket over it says "nsda", only a "p" apart from what the Nazis want to wear). It's more craftiness, not really creative in the pure meaning of the word. Gollum is crafty, too.
Oh no, it's so much worse. This is a BRAND NAME, FCK NZS is a company that sells "antifascist" clothing and accessories. Capitalism has successfully commodified antifa.