Yeah, but we're almost 2.000 years away from the King of the Dead being damned. The Rings were forged ~1500 in the second age, while the War of the Last Alliance took place 3429-41. Which would make him over 2000 years old at the time he was cursed, outliving Numernoreans by roughly 1600 years. I since Isildur is in this story now as well, even though he was born 1700 years after the rings were made, obviously, the show doesn't give a shit.