It really points out 1, and likely 2 issues.
First, unless there is absolutely nobody on CU who can play CB well, that many snaps is just going to grind a player down. I'm not even talking big hits, death by a thousand papercuts sort of deal. Finger caught in a jersey, landing on a wrist, the non-injury contact at the LOS and while running a pattern. Hell, doing it without a team across the field creates minor wear and tear. So issue one, if there is someone who can play CB at least decently, that's a terrible coaching decision on behalf of a young player.
Second, either coach prime was so shitty he didn't bother to find a player he could fill in for Travis at CB through the portal (shitty coaching) or he knows that the fill in player isn't of the same caliber so he doesn't care about the health of his best WR. (Shitty coaching)