Would agree with that, but just very briefly: the main characteristic that defines fascism is a strong cult of personality. The Afd doesn't have that at all. They also don't display any kind of expansionist ambitions, but are rather nationalistic in an isolationist kind of way similar to most of the right-wing populists who have gained popularity throughout Europe. I have very little doubts that some of the hardliners in the party and possibly even some of the more moderate people are authoritarian, but fascists they are not.