Maybe when they’re still learning their rotation, I imagine many people start clicking the next ability before gcd is over tho esp. when muscle memory starts taking over the rotation
on singletarget maybe, ideally they start with the one button and then what I would do is move more abilities over to dedicated keybinds as I start learning when to use them but the one button does come with some limitations, it won’t for example make you change target and interrupt that priority cast that can wipe your group so for example binding the interupt spell seperate from the button in my eyes is always desirable and should be one of the first abilities to master outside of the one button if they even honestly want to make it in entry level group content because the game is simply that punishing