I think the backfield graph does a nice job of showing that; the two running backs increased their carries per game by seven and decreased their yards per carry from 7.2 to under 5.0.
Surprisingly enough, Ohio State actually ran the ball more often in the red zone in 2018 than in 2017, if I am remembering my numbers correctly. As a whole, the 2017 Buckeyes ran the ball far more often but that tendency flipped in the red zone.
Per ESPN's play-by-play, Ohio State visited the red zone four times against Purdue. They came away with six total points.
This comment made me shed a tear of joy.
I think the pick and roll will always be relevant. The 15-foot pull-up (and I have no data on this, just my opinion) coming off of a screen probably gives you an above-average shot from that area, as there is no defender closing out on you. The issue with the mid-range is that the average is bad, but if you can take and make good, open looks from that area, go ahead.