Quote Originally Posted by aesteval View Post
Probably because it was the quick and easy no ambiguity for disabling abilities you won't have access to while level synced. No need to micromanage coding logic to determine what's not available, just disable everything and let things be re-cast by the player if they currently have access to the skill.
I'd be Ok with this if they at least reset all cooldowns. I hate when I hit Aetherflow, then level sync, lose aetherflow stacks and have to wait 1 minute before I become useful again.