There are vociferous sects of German society that very much believe in the kind of regime that Erdogan seems to represent, but I agree with the point that he should have quickly distanced himself from Erdogan or at least made the line between his position and the Erdogan's very clear.
I would agree though that whatever they (DVB/individuals) see him as, be it German, Turkish-German or even Turkish, they should be consistent with their view then they wouldn't leave themselves open to some of this stuff.