The common case of the smoker (or someone around them) doubting whether they "really" want to quit cigarettes or not, after claiming they do want to quit and will quit, and then failing to do so, shows this is coherent though. It's just not applicable to the two examples you gave, because that's not what is meant.
I miss it, and I didn't want to quit, but it was financially a little silly and that much nicotine causes health effects. You can desire to stop something but also not want to. It seems fair to allow both to be true.
Where have I heard that, before?
In my experience, compulsive people can often be totally unable to quit; no matter how hard they want to.
That’s one reason that I don’t dis fat people (I could stand to lose some weight, myself, and I’m working on it).
Drugs like Ozempic, have been making big differences, here, as they attack that reptile-brain compulsion that makes quitting so difficult.