Looking at feddit.org's homepage now, it has this rule:
"Content that is illegal in Germany, Austria or Switzerland will be deleted and can lead to an immediate ban of the account." (emphasis mine)
I am totally ignorant of how German law applies to social media hosted in Austria and moderated by Germans, but the intent to not host content illegal in Germany seems clear and a clear motivation for their censorship. I also can't evaluate the quality of their censorship because I'm not familiar with the requirements of German law.
I wish some of those comments “just expressing dissatisfaction and questioning the policy” had survived, because without them it's your word against theirs. :(
I didn't see any relevant surviving quotations elsewhere in the pinned post, and I'm not going to go through a whole community looking.