Like all right-wing parties they lack any actual real agenda. That is, they’re not interested in running the currently existing state, they want their fascist WW3 Nazi Germany with them at the helm. Rather, their entire political “argument” right now is “Current stuff is SHIT!”. That’s how they get all their votes, from people being angry and disappointed.
But, much as I like to ramble about current politicians (since you can’t call the AfD fuckers “politicians”), things can be shit outside of the control of anyone in particular. As if Höcke could have handled COVID. Imagine what a disaster it would have been if he had any say in it. Imagine how even the nascent efforts at climate would be worse. Inclusion, Russia, education, health, there’s not a single topic the AfD would improve if they got power. And they were openly do not intend to improve anything. They’re completely open about it.