Some years ago the NBA decided that the potential gain by getting offensive rebounds was outweighed by the risk of getting beat on a fast break, so they stopped crashing the boards, and basically decided to drop 3-4 back as soon as a shot went up. If the center accidentally gets the rebound, OK.
A lot of coaches in the NCAA have adopted this as well, and evidence would suggest that Terry is one of them. I disagree, and will explain why in a second. But for what it's worth, Creighton and Butler are in the bottom 50 in this category, but at least 8 of the top 25 teams are in the top 50 in offensive rebounds. We are #300. Terry appears to me to be trying to run the same offense and defense as Texas Tech who is middle of the pack. Only Tech has better athletes and a much superior coach.
Assuming that something that works in the NBA will work in college or high school is stupid. The athletes just aren't as good. There are a lot more offensive rebounds available to be grabbed in college than NBA for starters, which changes the calculations. Second, people are doing studies on the theory and coming to the conclusion that statistically it may not even be correct in the NBA but looks less and less correct as you go down to college and high school.
No team should ever get a successful fast break against you if you make the shot whether on the initial shot or a putback after an offensive rebound. Second, even for a team as bad as us, we have a much higher pct on the 3 on a 2nd chance where we get the board and kick it back out. Third, if you are rebounding, you force your opponent to work harder for the rebound. He can't drop more guys out for the break than you are crashing the boards with or you'll kill him with putbacks. Fourth, if you're as horrible as we are at shooting in the first place, you darn well better plan on getting 2nd and 3rd chance shots.