Yeah, gonna have to agree to disagree after looking at his rosters. Almost every season he had at least 4 players who were 6-8 or taller. His last season in Ames he had 6-8, 6-8, 6-9 and 7-1 on the roster. His roster had more big players than Miles had. Georges Niang started at Center for him for 2-3 seasons. He was 6-8 230lbs so yes he wasn't the biggest player but still nothing like the "
very few that were above 6-6". Heck in Fred's 2nd season at ISU he had Royce White bringing the ball up as a Point Forward and he was 6-8 260.
Below link has his roster from his last season at ISU. He likes outside shooters but people saying he doesn't recruit any bigs need to look at his past rosters.
https://en.wikipedia.org/wiki/2014–15_Iowa_State_Cyclones_men's_basketball_team