The hack is clearly politically motivated, targeting all but the far-right parties (i.e. AfD is conspicuously missing) and left-leaning public figures. The data is often highly personal, including iCloud dumps, private photos, emails, and messages.
The absence of content on the AfD could also be due to the relatively young age of the party. It has only existed for 5 years which is extremely young for politics. Even if the leak contains recent data, there has been considerably less time to compromise party members. Being a young party could also mean the party's computer infrastructure and practices are more up to date.
You mean such data as is collected by the BND at DE-CIX? I have only little sympathy.
Also possible that this is a divide and conquer strategy by an external actor.
Thats not conspicious given how old the info in this leak is
Or the AfD is so technically inebt that it only has one party member that even has email...
AfD members are very active on Facebook and various other networks.