It works, just finished syncing, literally took weeks. It's still missing a valid SSL-cert, this is next on the ToDo-list.
A (in this case "the") seednode provides the initial network connection and peer list clients who don't have a peer (valid/working) list yet.
Thanks for this, good to see TRI slowly getting things down that were out of date. People will come here and see not much activity but the true believers in TRI like myself and many others continue to stake and earn rewards for the future. The price has also been holding up well even with the skyrocketing BTC price.