My friend is almost a direct replica of the kid you are explaining (but without the "mum treats him like a 5 year old" thing).
He gets great effects that he can't perform, and he doesn't take care of them (they are strewn all over the floor of his room), and he does them at school and can't present OR perform them worth a pile of beans.
And to add to all that, most people have a strong dislike for him because he acts like an [edited] to everyone for NO REASON!!! Literally, I asked him why he acts like an a$$hole to everyone (those were my exact words) and he said, "I don't know". And he knows people hate him for it. He even agreed to let me stop him if I ever thought he was being an [edited], but two weeks later he was at it again.
And to add to it all, he downloads HUGE amounts of magic DVDs and literature (as in the entire Card College and Art of Astonishment series) onto his computer and never spends time ACTUALLY LEARNING how to perform!!! Those last two things are what piss me off the most about him.
It's so hard to deal with these people. I would also like some advice...
Hmmmmm.... and how exactly is he downloading all of this COPYRIGHTED material? That doesn't sound good at all!