I dont think they’re just throwing him into the position. This was planned. McGovern mentally will handle center with ease. The snapping is the only concern. McGovern has moved from guard to center at Penn State.
I also feel Kromer really likes David Edwards at LG, he had him in LA. They drafted a quality center as depth, so they aren’t putting all their eggs into McGovern. Nothing wrong letting the rookie develop and learn the offense. As you said, center is considered the QB of the OL.