Consider that in the past week or two there have been many posts getting flagged despite being about
a topic of particular interest to many HN account holders.
One might wonder what HN will look like when all posts are flagged, and hypothesize what conditions would be required to realize that.
Something to consider as these posts keep getting flagged.
Controversial topics aren't the problem, it's the level of intelligence, ability to observe forum etiquette (read faq / guides) as well as the ability to read the room before adding a comment - one that falls towards an effort to post something of additional value or quality.
Just search Dang's recent posts - they should clear up any nuances to be had, stuff which seems to fall outside of the guide lines.
As for flagging, as I view the dead threads as well, so much is just a repeat of earlier posts hours in not a hour before - maybe from a slightly different angle ... an inch or two to the left or right. I think, IMHO, it would be hard to find a thread that was flagged that wasn't something similarly posted in the last few days.