They're guidelines. HN is based almost entirely on self-censorship, and moderation has always been light at best, partly due to the moderator-to-comment ratio. Of course the HN guidelines often fail to be observed, which is nothing new.
None of my agents say that anymore.
All glory to the em-dash.
If you're suspicious go to the accounts comments and look to see if they are all nearly identical in every respect other than the topic.
Most are:
It's cool you did <thing you said in post>. So how do you <technical question>?