The question is only whether you consider ironic racism (in this case mocking 19th and 20th century "race science" with reversals of focus) to be racism regardless.
I don't think so, but there's also always elements of Poe's Law to consider. Not to mention that, for example, British and American racists literally said these things unironically about Germans, reaching fever pitches in WW1.
Though seriously, in Tropic Thunder, Kirk Lazarus is a satirical character whose method of acting goes to such lengths that it becomes offensive, hence why he's in blackface.
Like it's supposed to be offensive, that's the entire point. It's satirising the film industry's portrayal of war and the actors in the industry. They even point this out in the film itself, lol, it's a key part of it.
Using satire to back up your deflection unironically is certainly... something. Haven't seen that before. But the original post has no satire, punchline, or even anything witty. It's just plain racism.
We all know words can't really express sarcasm or other underlying feelings or meanings very clearly. Without a /s your only able to assume if the they did or didn't actually mean that.
So what's the joke? Are they're pretending to be racist without the topic (rammstein) ever mentioning race to begin with?
I don't buy that. 'Please excuse me. I'm just going to be sarcastically racist without anyone previously mentioning race!' -- It's straight out of the alt-right playbook; when called out, claim it's a sarcastic, ironic joke!
Right, but there's enough social context going on to generally assume that stans for the philosophy of Karl Marx and Friedrich Engles probably don't actually consider Germans a form of untermensch.