[nl]

From that link you shared:

> But while the early ego-depletion concepts appear to be flawed, experts say that self-control can wax or wane for a number of predictable reasons.

and

> Inzlicht says that no matter what a person does, willpower is going to be a fickle commodity. It’s heavily influenced by many variables, and so it really cannot be trusted. “There are easier, less-muscular ways to engage in goal-directed behavior than relying on willpower,” he says.

Close enough for most purposes, really.

[codemac]

No, not close enough at all!

They show that willpower comes and goes for many reasons, but it is not a limited resource. You can't "use it up" in the morning, and thinking that way will lead you to actually having less willpower in the evenings even though you could have plenty!

[nl]

> You can't "use it up" in the morning

No, but some things you do can deplete it.

[codemac]

They literally say in the quote your reference that's not the case though, that it's fickle - not a resource you can "deplete".