safeties have some of the hardest collisions on the field every week even when they are playing a finesse team. If a qb is going to hang balls up in the air the safety is expected to make a play on the ball or knock someone out. I hope I am wrong but history is what it is with playing freshman early on defense. Almost always get hurt and it delays their development.
The main issue is who is there at safety right now. I fear you're right that he is going to be a major contributor good or bad / ready or not.
Beaver- Somewhat highly recruited out of high school but hasn't done anything yet. May be good, may be not. Hasn't stood out on special teams yet. Played and was probably told to be super conservative vs byu.
Walker- Not a big guy, don't know much about him, made no impact last year.
King- Tall but paper thin, around the ball a lot last year which makes me think he may have good awareness (small sample size) but now he is hurt.