In fairness, Enes Kanter is the best low post big Stevens has ever coached at any level. Jared Sullinger is the second, but he isn't on the same level. Horford and Baynes were servicable if they got it on the block, but not great. After that, you are looking at players like Tyler Zeller, Brandon Wright, etc. who were soon out of the league after their tenure with the Cs.
Heck, Williams, Prorier, and even Fall (potentially) might be a few of the most effective low post bigs Stevens has coached.
I've always agreed with Stevens coaching style. If you can't dominate the low post, you shouldn't be clogging the lane. The NBA rules give advantages to quick, smaller guards, but you negate their effectiveness if you are in their way all the time. Horford, Baynes, Theis, Sully, Olynyk, Johnson, Zeller, etc. could put the ball in the basket some down low, but they couldn't break the defense or demand double teams through their postups. It's much better to build a scheme around players that can break a defense down and demand double teams or help. That's why he spread the court and gave the ball to Thomas and Irving. That creates the most pressure on the opposing defense.
Most teams still don't double the low post, but I could definitely see Stevens developing a part of the Cs offensive scheme around Kanter's unusual effectiveness inside. If he scores so efficiently that one defender cannot make it difficult on him and it starts breaking the integrity of the defense, the entire court will open up.
Still, watch the training camp videos on youtube. Many of them include the bigs taking corner and top-of-the-key threes. I was pleasantly surprised with Prorier and Williams stroke in the corner. Grant Williams looks like a 40% three point shooter. Kanter has a nice little compact motion that seems extremely effective.
If you think Stevens won't ask his bigs to shoot some, you are wrong. That opens the court for Tatum, Brown, Hayward, and Walker.