The answer at Reddit is spot on. Why discuss further?
First, there was Denazification. This itself took two tracks. First, for a small minority it meant trial, imprisonment, and/or death. But then the policy of Containment took off from the Potsdam Conference so containing the new enemy became most important. So second, this meant that many ex-Nazis found themselves in the conservative Adenauer administration. People were needed to run a country and options were limited.
Germany moved on, rebuilt itself (mostly by women), dealt with an East-West divide and pretty rapidly by the 50s with Marshall Fund support, had an economic miracle recovery brewing.
There was indeed a bit of haste to heal, rebuild, and move on, fight the Soviets, and in that short duration there was no time for collective memory. This did not happen until the children and grandchildren of the WWII generation started asking questions, particularly during the peace movements of the late 60s. But substantial education reform did not occur until the late 70s when the TV miniseries
Holocaust debuted. This became the catalyst for public debate and reform.
Today in Germany you do see monuments to WWI and in the former Eastern states you see many more monuments dedicated to the Communist victory over Fascism. But that's it. The biggest and most significant monuments to WWII come in the form of restored 'Memorial' concentration camps that remain witness to the atrocities. Examples include Dachau near Munich and Buchenwald near Weimer and even Sachsenhausen near Berlin. Many many other monuments representing collecting memory and reflection exist in the form of '
trip stones' and even the three memorials in Berlin that flank the Brandenburg Gate: Memorial to the Murdered Jews of Europe, Memorial to the Murdered Sinti and Roma, and the Memorial to the Murdered Homosexuals.
When approached appropriately with maturity, all Germans I know are willing to discuss the topic, not only personally but also as a German. The subject is taught through-and-through in all secondary grades. A visit to a camp memorial site is often required. It is also illegal in Germany to denounce the Holocaust as well as display any Nazi symbols. With the exception of the youngest Germans (under 25 or 30), there indeed remains a collective national guilt and this perhaps is most emphasized by a certain collective pacifist nature as well as a refusal of most national overtones. Most Germans don't raise or show their flag and don't sing their national anthem...unless it's associated with a soccer game of sorts. Germans source their national pride in other things...like education...producing skilled workers...making nice things...winning soccer games.
For some of you, this may be an interesting read:
How Germans are Learning to Like Themselves.