I do think that he'll be swimming in 5-10 years because of this approach. It's the 6-15,000 per day that many other elites at this age do that burn them out.
My point isn't that TI is for this kid, my point is that he is training under the principles that make Ti different. He is not doing any pointless yards. There is a focus and a plan to every yard, and his coaches constantly point out that they are trying to train his brain more than his body. I think there is incredible potential for this kid because he has exceptional natural predisposition for being a good swimmer, and his coaches are taking a unique apporach that will keep him positive and constantly improving his skills. They stand firm on the idea that a tired swimmer is a sloppy swimmer, so doing mass volume has a negative impact on form.