I don't think I'll beat that amount of dedication in a game ever again. I was a young teenager when I started playing this game which had eaten all my social life... Guess it is part of me.
Last week I felt some nostalgia and reinstalled the game after ~18 years without touching it. It's crazy that my character is still there on some server (even if no subscription was paid for all those years), more or less in the state I left it the last time I logged-out years ago. The guild has been erased, but the friend list is still there as a reminder of those past friendships, none of them logged-in of course...
Fun fact, my parents refused to pay for the game at that time, so I started playing on the account of a friend, from which I later bought the game second-hand. The login still contains his name, and I think that's the oldest login/password I have a trace for.
(Game is Dark Age of Camelot)
Seriously though, I never got near those numbers. I did put about 2500 hours into TFC and TF2 before it became a bot hellscape.
Maybe 2500 on 2 accounts that were both my gf and I on rocket league. Usually on the same team. Over several years in our 30s.
Maybe hit 1000 on worms2demo online as a kid.
Respect