Germany is a real democracy. If a party that gets too popular for certain tastes, their solution is just to ban it before it gets into power.
https://foreignpolicy.com/2023/12/13/germany-afd-far-right-ban-populism

Weimar and Hitler and Nazis ofc. Just look at these brownshirts on picrel, probably shouting Sieg Heil! right at that moment.
But let's say AfD is literal NSDAP. Still the situation is wildly different than what was during Weimar. Is there a popular revanchism? Is there a popular notion that Germans have to take the reigns of Europe? Is there strong paramilitaries full of disappointed ex-military personnel?
They enjoy a great deal of freedom, and a great deal of influence all over Europe. Their companies are the strongest, their farms own lands even in Eastern Europe. They can move wherever and live comfortably.
Besides the governing leftlib side is the most hawkish block in the country. They are the ones supporting Ukraine with money and weapons. They are the ones who want to send more. They are the ones who started in high-volume rearmament of Germany. AfD is a lamb compared to them.