You are right about that since I never saw a single practice. . And neither did you.You have zero clue how he preformed in practice. Do you honestly think if he could have helped the team they wouldn’t have played him. He wasn’t ready.
But, what I do know, since I saw every game this year, is how poorly the O line played all year.
LT and LG were two VERY WEAK positions this year.
Giving KG a few actual game snaps would not have significantly diminished the OLine play. Even if it was just on run plays.
There were zero irreplaceable players on the O line this year. ZERO!