> Posts with a lot of comments should also not be flagged.

Sometimes a lot of comments on a post are a sign that the post was extremely interesting and has generated equally interesting discussion, and sometimes it's entirely the opposite signal; said post was a "trigger" topic generating a pointless flame-war that nobody in their right mind wants to read or participate in. The numbers alone aren't the whole picture, but only a small detail that signals something is happening there. This is one of those situations where LLMs/"AI" (love/hate it) could actually be a huge help, classifying particularly "active" posts into useful "buckets" by type.