Danger Dan und der Bankrott des liberalen Antifaschismus

There's a new antelope scandal: Danger Dan of the Antilopengang was first invited and then disinvited by ZDF to perform his new anti-right-wing song. More than the debate about artistic freedom, however, I'm interested in the content of this song and why it's so indicative of the bankruptcy of a state-supporting, liberal German Antifa movement, which, faced with the political dominance of the AfD, can't come up with anything but completely anachronistic 90s reenactments.