The core reason for having the degree of focus in woodworking that he does is the sheer power it offers in faerie. He has a roll for creative 'collaberation' to change a faerie with a score of 7+3+5+2+3=20 plus a die roll. He can grant a faerie a minor virtue with a total of 12 if they pay might+10 pretense points (character points, not actual levels), and can grant a major virtue for 30+might points with a total of 24. If he goes into arcadia he can make a story 'offer' of 2+7+3+2+3+stress die, which is, other factors being balanced, enough to eliminate a major threat to the party with an offer of story change.
Now consider a child of 6 or 7, who first begins working wood because it seems like a fun craft. In one season 4xp=> 6 from affinity, which gives him an ability of 1+3, with a 1 dx (5-4) and free expression, which gives him a score of 9+roll to effect a change, at which point he could reasonably give virtues to his childhood playmates. Having discovered that kind of power at that age do you think they would not pursue it?
Now, if there are concerns that this makes the character too powerful, or that we just don't want that level of faerie involvement, I have a backup character concept I can go with. I think however that his reasons for pursuing this degree of focus in woodworking is well justified.