You're not winning Olympic Gold medals if you aren't dedicated. But yeah he's had some issues with the boxing association IIRC.I don't think he'll do a whole lot in the pros as talented as he is. Think there's rumours that even back in Cuba he wasn't all that dedicated. Be some addition to the pro game if he's really up for it though.
Has more to do with a fighter as an individual than the Cuban school of boxing, which is second to none and actually enables fighters to win on sheer skill even when/if they're lacking in the grit/chin department.Unfortunately, Cuban boxing does poorly in the pros.