The chain may still be running, but honestly I have not checked in quite some time.  However, the screenshot you linked is slightly incorrect - Huntercoin does not use Namecoin names directly.  It uses the Namecoin codebase but on its own blockchain with modifications, like how Litecoin is based on Bitcoin but not "using Bitcoin assets".

I've seen interest from the historical NFT community in Huntercoin from time to time.  Unfortunately (from that point of view at least), Huntercoin does not have any collectible assets; account names are not durable, but get destroyed from time to time based on game events.  There is also the crown of fortune, but it is also something that gets transferred inside the game due to game play, so it cannot be "just owned" by a collector.