I want to know how this got flagged, but someone comparing “Roon…apologists” to climate change deniers didn’t.
Firstly, comments about moderation or flagging will usually be off-topic in the subject thread and derail relevant discussion. If you want to talk about those things then create a thread in this section and link to the original thread.
The short answer to your question is because nobody flagged it. If you see a post that you think infringes the guidelines, then flag it and move on.
Moderators occasionally flag posts, but most flagging is done by users. An infringing post can be up for some time until someone notices it and flags it.
Sorry, it was really more of a hypothetical question than anything. I went and flagged it right after.