I don’t really understand what you’re asking, but I don’t think the AFD is really a unique phenomenon. The popularity of right wing parties is across the entire West and IMO it’s for the exact reasons I just wrote.
Harris lost to Trump in 2024 for what I see as exactly the same reasons.
The mistake in your analysis is that it is not just the far right but populism in general is on the rise, Mamdani, Green party in the UK etc.
I think you downplay the role of social media in fanning the flames.
"Careless People" talks about it and how it was the inception of Meta's powerplay into politics by becoming indispensable for politicians to use their platforms to reach voters. The only thing they cared about is engagement and avoiding regulations, both are easily achievable if polarisation becomes the norm, the obliteration of proper political discourse into the form it exists now is a consequence of that.
I don't believe those far-right parties would have this much support if public discourse wasn't mostly focused on online platforms like Instagram, TikTok, Twitter/X, etc., they wouldn't have the reach nor the tools for creating information bubbles as existing right now. Those platforms allow for the formation of entire separate realities that are self-reinforcing.