My comment is by definition not ad hominem. The part of the interview you quoted is low on facts and consists mainly of opinion. I would like to help the non-German audience on Hacker News to be able to classify the positions of the persons involved. That is why I also provided links with sources. Ken Jebsen and Willy Wimmer are part of what we call in Germany the “Querfront”: that literally translates to “cross-front” and in the historical sense is the term used for anti-democratic strategies to combine the opposing ideologies of nationalism and socialism in order to assume political power in the Weimar Republic. Internationally the modern iteration is known as “Third Position”. Today you can find those positions in every political party. They have in common that their positions are anti-American, anti-NATO and pro-Putin. So Mr. Wimmers CDU membership doesn't come in to play.
My translation from the introduction of “Rechte Hetze im Netz - eine unterschätzte Gefahr” by Patrick Gensing: “This heated atmosphere is fired by pro-Russian strategists who propagate a close alliance with Putins Russia. The result is a cross-front that wants to impose an authoritarian-nationalist system.”