I completely understand what you mean OP. Literally nothing is actually skill based in this game except for maybe pvp, I haven't tried that yet, but as long as it is player vs player it is technically skill based. However the pve in this game is only knowledge based because all enemies will react the same exact way every single time. Once you already know what they are going to do there is no longer any technical skill involved and it's just execution based on memory.

Obviously games not vs other player "can" be really difficult considering games like touhou exist. There must be some middle ground to making an mmorpg pve content more reaction based. This game does a decent job of that with aoes that you need to dodge and stuff, but you already know it's coming and the patterns are never complex.