Have you actually played TOS or did you just look at pictues? Serious question. o.o
By the same logic you can say in TOS you kill monsters, do quests, level up and queue for instance dungeons with other Swordman, Mages, Healers and Archers. So TOS is the same as WOW. Must be a spiritual successor of Azeroth I guess.
I know the game was supposed to be kind of a successor to Ragnarok and was even called Projekt R iirc. But still the core game, the fundamental gameplay concept, the way it plays, the classes and how skills, character developement and fighting works is not even close to how Ragnarok was. That’s the way it is and either people like it or not. I know some people that actually came here because TOS reminded them of Diablo and I think that’s actually more than those with the Ragnarok past. That made sense as TOS definitally plays more like Diablo than Ragnarok. It’s kind of a Korean Diablo mmo(rpg) in kawaii and bad with horrible support and even worse balance. But it’s kawaii and the soundtrack is good - so it’s fine.