The author hit the nail on the head perfectly describing "UO golden age" players yearning to fill the void.
I will offer 2 major hazards:
1) what made UO special back then was not the ultra-harsh pvp death mechanics, as mortal online has shown. It was the players that were interacting with the harsh mechanics. We were all MMO-naive, and our mentality affected how we interacted with the core rules. You can never again get an un-jaded MMO population. Players have since been transformed into minmax ultragreedy automatons. No game can simulate the old players.
2) Richard Garriott is out to suck the blood out of your UO nostalgia. He got $8000 from mine with Shroud of the Avatar, insanely more from some of my compatriots. Now he's fully abandoned that project even though he had full ownership (ignoring the 'seed round' of literal SEC fraud). He's working on the next generation of nostalgia exploitation, building an MMO out of NFTs.
Trust me it's time to let UO die. It feels so much better when you've let go.