You may disagree (or agree) with many of their other views, but as an opposition party, they are precisely the corrective Germany and Europe need to keep the power-hungry elites in check.
Votes by party affiliation and name to verify this can be accessed here: https://www.europarl.europa.eu/doceo/document/PV-10-2025-10-...
Very few are principled enough to stick to that in power.
You may it seem like they operate independently. They do not. This determination (while I subjectively agree) came of a report was released by a failed government's acting minister of internal affairs, on her last day of office. I read it myself and even though I don't like it, it's pretty imprecise and does some pretty heavy straw grasping at times.
The public was sold this Nazi story about the AfD by the established powers to keep them down. Looking at what has been going on it's wild to me to call the AfD authoritarian compared the the Altparteien...
One of those empty words one needs to be careful with it does not mean anything, and everything. Politics is not about suppressing ideas of other people, somethings parties can agree on others not so much.
[1] https://www.theguardian.com/world/article/2024/aug/29/the-tr...
Additionally, this is something that would be in their ideological background. I guess they just fear to become victims themselves.
[0] https://en.wikipedia.org/wiki/Cordon_sanitaire_(politics)