Any particular reason you are so adamant on this? It seems like a pretty safe bet that he'll never be a great finisher given his frame and athleticism.
Great question! I suppose that the first order of business is to nail down what "finishing" is. The poster who prompted this discussion used FG% as his statistical basis, so I'm basing this substantially on that measure. It's not singly the ability to finish after getting bodied. It's not simply the ability to draw fouls. It's the ability to make the shot after having worked the ball relatively close to the rim.
The shots DHam missed last year were often 3-8 footers that he took after freeing himself up with his dribble. The theory being espoused is that he is not "athletic" enough to explode over/past defenders and he is not "long" enough to give them the Jeff Adrien and shoot over them. Consequently, he will never be able to "get his shot off" over the competition at a "great" finishing rate.
I find fault with that syllogism on several grounds.
1st, I dispute that he is not "athletic" enough. DHam is deceptively athletic. He reminds me a lot of RIP in that regard. Not a big blow by guy. Not going to throw one down like Purvis' crazy dunk on the blow by last year. Not going to deek a guy onto his ass. Not going to sky over people and dunk in traffic. I think that he plays with a decidedly finesse style, and it appears to be less athletic because he avoids contact, doesn't go for monster dunks, and so on - just like RIP. The length number is useful but overrated. Nobody puts up the "only freshman in the nation with X points, Y boards, and Z assists" and is not athletic enough. Nobody.
Second - I place a huge emphasis on shot selection. If you're a good shooter, and you have good touch, then it's very important to be taking good, makeable shots. Steve Kerr was excellent about pointing it out during the FF. "I like the shot" even when it was missed. Or "poor shot choice." DHam, for the most part, took makeable shots that were good shots, which makes me less concerned about them not going in. Pretty much 75% or more of his shots in the lane I thought, "that's a good shot," and he'd miss it, but not by much. Point is, he's not taking 8, 9, and 10 level difficulty shots where he has to evolve into a circus performer to get them to drop. He's taking good shots. They will drop at higher percentage each year going forward.
Third - I don't think people give enough credit to the "we really sucked" impact on DHam's shot percentage. Because we were just plain awful, Defenses were able to key in on Boat and DHam, thereby taking away a lot of easy baskets that would have increased his shot percentage. That will happen this year. If he can kick out to Gibbs for a 40% 3 or lob to Brimah for a 90% dunk or kick to Purvis for a muscular blow by or bounce pass to Miller for an 8 footer, the floor opens up tremendously for him.
4th - From what I've read, the guy has an excellent work ethic (see Husky run improvement). Combined with his rare, deft feel for the game and nose for the ball, it's only a matter of time before he masters this facet of it.