Or, maybe he/she shouldn't be spoon fed. One of the desirable behaviours implicit within the tenets is self-reflection. A person should be able to consider their own behaviour and critically appraise it.
Just what do you mean by spoon fed? If you mean that, by spoon feeding, somebody else is taking the test for you or helping you with the test than from my experience, you can't be spoon fed in the martial arts. All the places where I've trained you have to take the test yourself without help if you want to pass. If by being spoon fed you mean that a person is told that they aren't behaving properly than I can see, to some extent, that a person should know that beforehand.
The individual in question displayed a very quick temper and an inability to control it. There were a number of occasions where this was an issue, two of which involved physically violent outbursts. His next grading was first dan. Would you have held him back? It was obvious to him and everyone else why.
In lots of dojos he might not last. Students who act like that are sometimes expelled and banned. So if he was at a dojo that I was running I probably would've expelled him far before he got to the grading before first dan. As it is, though, such an attitude would probably hinder your skill progression in the martial arts. With his problems I don't see how he would've ever gotten to be at the level he was which you said was one notch below black belt. As its been posted here before, trying too hard and becoming too uptight can ruin your technique. So I don't see how he would've developed the skill level of 1st dan or anywhere close to it if he was like that.
I don't really care about Bruce Lee TBH, you brought him up. He is a dead martial artist. I concern myself more with living ones. I maintain that there is a state of high emotion which is undesirable in Taekwondo, and those who display that level of passion also display a lack of self control. As self control is one of the tenets, that person still has a way to go on their journey.
Dead people can be just as influential, if not more so, than living people. Just because somebody is dead doesn't mean you should dismiss them. As far as emotion is concerned, its fine to have emotion as long as you control it and not the other way around. When you're in control, emotion can be used to great advantage. Take for instance fear, a very strong emotion. You could say fear is a fire burning inside you, if you control it than it will make you hot, if it controls you it will burn you up. Actually it was from Rocky V that I got that but the concept is true. You mention the importance of self control and that's where controlling your emotions comes in. Strong emotions are fine as long as you have the self control to handle them.
I would also have a problem promoting someone whose mantra from white belt on were 'I want to be a black belt' or 'I want to be a master' and for that reason wanted to take every test as soon as possible. Modesty combined with self-reflection should encourage a person to critically appraise their own abilities and see a need for consolidation and improvement.
The problem with that is once you do become a black belt or a master than what? Black belt and master are just milestones along the journey as I said before in this thread. Also, I think a white belt focusing too much on the black belt is getting ahead of themselves, much like the parable about the student who was told the harder he worked at becoming a master swordsman the longer it would take him and was told, "When there is one eye fixed upon your destination, there is only one eye left with which to find the way." A white belt should be focusing on whatever belt is next up such as yellow belt as it is in my style. As for the black belt, you cross that bridge when you get to it. Its important however, that when you do get to that bridge, that you cross it.
On a side note, how do you feel about academic students who since day 1 in school has a mantra that, "I want straight As," and/or "I want a Ph. D."? How about college students who take a heavier than usual coarse load because they want a degree sooner? I've known students that've done that.
I want my students to realise and keep a higher standard for themselves than the standards set out at testing. They know this, and most of them do.
Most of your students must be good students than. I also like to go way above and beyond the standards of the tests instead of just scraping by as some people do.