Was this conditioning induced by starting Goodson, Robinson, Coker, for example? Literally our last regular starter began starting as a freshman. Albert Young started as a freshman. I'm sure other, less historic (for good or bad) guys probably did as well.
Freshman QBs start when they are like top ten talent or they are playing for an unstable program or a new coach. There are, of course exceptions, but that's the general experience since freshmen became eligible. KF is hardly an outlier here.
KF is not perfect but an unwillingness to play freshmen is not among his imperfections.