HNMs are still a rare find, dragons are virtually extinct from the game.
Due to their short windows HNMs are still claimed but not camped like they used to be. Some PCs do circuits if they got the TOD from one to the next but often there's times they're still stomping around unclaimed and free game to anyone. That's ok, although a shame for anyone wanting the Rare/Ex item or the RoE for killing it.
Dragons on the other hand you'd be lucky to find them alive, or if they are due up expect a few BSTs and other anons camping them out. Half of these aren't even players, they're bots. And who can blame them? These dragons spawn once every 3 hours and with a 2 day window. Their main item coveted by many for their high value may have been replaced by a Rare/Ex version, however they still drop other items of value even if it's not worth as much and they drop a considerable amount of gil too. The very thought of waiting 3 days and then staring at the screen for 2 days straight is enough to put anyone off wanting to try it legitimately, encouraging people to use bots or account sharing.
You will never find dragons roaming loosely in their spawning area like you sometimes do with HNMs. The Rare/Ex alternatives has not deterred bots from regularly camping and making claim of them. It's a real shame that their only existence is to satisfy botters because regular players don't have a chance or the time to spend waiting days in the hopes of winning a claim.