To backstab someone as a metaphor for betrayal is as common in German as it is in English. So while the origin of the Dolchstoßlegende and this float are linguistically the same, I don’t think this is a play on the Dolchstoßlegende.
Edit: I’m confident that they explicitly used a spear instead of a dagger to avoid a direct comparison.
I’m guessing it’s a play on the Dolchstoßlegende? https://en.wikipedia.org/wiki/Stab-in-the-back_myth
To backstab someone as a metaphor for betrayal is as common in German as it is in English. So while the origin of the Dolchstoßlegende and this float are linguistically the same, I don’t think this is a play on the Dolchstoßlegende.
Edit: I’m confident that they explicitly used a spear instead of a dagger to avoid a direct comparison.
No, no it isn’t. Read about that topic, and reflect why this has nothing to do with the float.