Sirrus only called it sarcasm because he realized he isn't awesome and no one wants to emulate him.
Furthermore it is he that is trying to emulate Limpfittz.
First of all, it's sarcasm because that's a stupid thing to say, and it wasn't serious in the slightest.
Second of all, only the Neo-Surrealism and the first one in Neo-Conservative-Imperialism were completed in their entirety when Limp was of prominence.
And the Neo-Surrealism ones aren't even
close to Limp's style.