I don't understand these coaches

Bowling Green's Scott Thomas is a 6-7 junior. He shot 32 more 3-pointers than anyone else on the team this year, even though he made only 29.4% of them. (That is below average even on an awful-shooting team - 29.7%). It wasn't like he didn't have anything else to do, because the was the team's leading rebounder. Why do coaches allow post men who can't shoot to continue to blast way from the perimeter?