They chose it because of the difficulties they had with removable infill. Ours is basically one giant piece that rolls up and is stored in a trench below floor level. UNI either didn't have a place to put a trench, or didn't want to spend the money to reconfigure the space behind an endzone for one. Because of that, they have to have turf that rolls up in sections and is carted away using modified forklifts to a storage room. When they installed their last turf which was infill, the sections were reportedly too heavy for their equipment and they had to cut the sections into smaller strips. This created issues with seams opening up and infill spilling all over the place when laying it out and rolling it up.
So I guess UNI had three choices. Keep the same equipment but go to carpet-style so they could use larger strips and not deal with rubber pellets. Upgrade the equipment so that they can handle larger infill strips of turf. Or spend a lot of money to build a trench and install an automatic infill system like the FD has. I would have gone with the last option if at all possible, and at least found the money for bigger equipment to do roll-up infill right if it wasn't.
BTW, they really messed up the colors. The original choices didn't look that bad. Wonder why they went away from them?
https://www.astroturf.com/2017/04/26...northern-iowa/