Yes there's an interesting dynamic, because the European project is a direct result of Europe trying to deal with its violent, racist, despotic past. Perhaps Germany thinks that Turkey should do the same as a precondition to full membership.
That seems unlikely to happen, especially since the fall of the Iron Curtain, EU has been will to let in pretty much anyone who wants in, regardless of their revisionist histories (see, e.g. Viktor Orban).
Seems like at some point the EU pivoted to make the project more about access to cheap labor than about cooperation and peace (about the time the Eurozone became a thing; coincidence?).