I found his SI article and book immensely helpful in learning how to improve my hitting as a kid. It made all the difference in my swing. Looking at my DD's young swing, I still see his influence and to me, that's a good thing.
While TW arguably was the greatest hitter who ever lived, IMO his descriptions and explanations of how he hit the way he did do not translate well to the hitting public or, for that matter, the MLB hitters he was paid to coach. I found/find his his mental game approach to be very helpful, but not so much the physical.