Yeah, I understand what you mean about the bad technique. Almost like he tried to really whip the ball, but he doesn't create enough topspin for it to be particularly effective. Hits it too flat for my liking. I still thought it was a weapon, and the side to avoid for his opponent, Halys.
No, his forehand is good. I watched just 2-3 games and than made wrong conclusion.
He is really nice to watch, he has fluently game, great serve with curve, good touch on the net, very good from both wings. He is complete player, I would say most complete from what I have seen of this juniors. However, he could become really great player.
I saw nothing that suggested he was arrogant, but hey maybe you saw something I didn't.
I made msitake, he seems a nice fellow.