I was looking through the sub history and found a prior (semi-related) answer to this question here: Why didn't Nazi Germany kill all the people in concentration camps before their collapse? by /u/kieslowskifan which addresses some of the why of this question here

Another response that might be useful as a follow up I found here: How many people were liberated from Nazi concentration camps at the close of WWII? specifically this answer by /u/estherke

/u/commiespaceinvader also has an aswer to a question titled As WWII ended, the S.S. come across as huge cowards - fleeing concentration camps, hiding their tattoos, burning their uniforms, etc. Did their fellow Nazis comment on this behavior by a supposedly elite/hardcore organization? How did the German public react? in their answer here

edit:fixed an incorrect link.

Can I add a corollary to this? In Evans' "Third Reich at War" there is a memorable section about a camp commander at Auschwitz who wanted to keep the camp preserved as a memorial to, what he saw, as the Nazis' gift to humanity of killing the Jews.

Supplementary question: was this opinion rare, somewhat common, or generally common? What happened to this man? Are there any links to writings by these opinion holders who changed their minds later?