I wonder what is the longterm plan of those that want to ban the party. We have a situation where (depending on the state) more than 40% of the voters vote AfD. If you ban the party, where would one expect the current voters to go to? I don't think they would vote center-left then...
Probably Sahra Wagenknecht's BSW? Ticks many of the same boxes: anti-immigrants, anti-EU, nationalist and pro-Russia. The primary difference is that they are socialist. So probably the techbros wouldn't be as happy.
My personal belief is, that a big share of AfD voters don't know what they vote for. We saw it in the US, where Hispanic people were surprised that they are targeted by ICE. They are manipulated by propaganda. And this can be stopped by destroying the propaganda infrastructure and defund the people behind it.