It stinks when kids leave but he will be a replaceable player. If he was that dangerous a weapon he’d have been playing a lot more. There’s 85 scholarships and only about 40 kids play meaningful minutes, situations like this are gonna happen.
There's something more here. He has too much talent and he bulked up to 185 lbs. so he could play some at RB. As mentioned, why not RS D. Davis and play Snell. We probably will never know, but talent is talent, and he has it.
The underlying tone in the football program this year makes me wonder what's going on with the transfers, players leaving the team, decommits for '19, Anderson's parents coming in to meet with GP and Sonny, etc. Running a substantial program in the Big 12 requires a full time coach - offense, defense and special teams. Only the defense is a bright star, but alas, I don't see any modifications on the horizon for the other 2.